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248220024 = 233131017877
BaseRepresentation
bin11101100101110…
…00100101111000
3122022001212212020
432302320211320
51002021020044
640344114440
76102556353
oct1662704570
9568055766
10248220024
11118128418
126b165a20
133c56b470
1424d7529a
1516bd1a19
hexecb8978

248220024 has 64 divisors (see below), whose sum is σ = 674987040. Its totient is φ = 75609600.

The previous prime is 248219987. The next prime is 248220029. The reversal of 248220024 is 420022842.

It is a Cunningham number, because it is equal to 157552-1.

It is a super-2 number, since 2×2482200242 = 123226360629121152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 248219976 and 248220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248220029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27574 + ... + 35450.

Almost surely, 2248220024 is an apocalyptic number.

248220024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248220024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337493520).

248220024 is an abundant number, since it is smaller than the sum of its proper divisors (426767016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

248220024 is a wasteful number, since it uses less digits than its factorization.

248220024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000 (or 7996 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 248220024 is about 15754.9999682640. Note that the first 4 decimals coincide. The cubic root of 248220024 is about 628.4618764014.

Adding to 248220024 its reverse (420022842), we get a palindrome (668242866).

The spelling of 248220024 in words is "two hundred forty-eight million, two hundred twenty thousand, twenty-four".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 101 104 156 202 303 312 404 606 808 1212 1313 2424 2626 3939 5252 7877 7878 10504 15754 15756 23631 31508 31512 47262 63016 94524 102401 189048 204802 307203 409604 614406 795577 819208 1228812 1591154 2386731 2457624 3182308 4773462 6364616 9546924 10342501 19093848 20685002 31027503 41370004 62055006 82740008 124110012 248220024