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250102420 = 22531403391
BaseRepresentation
bin11101110100001…
…00001010010100
3122102121112000121
432322010022110
51003011234140
640452321324
76124556401
oct1672041224
9572545017
10250102420
111191a3717
126b913244
133ca7a1c9
14253052a8
1516e5464a
hexee84294

250102420 has 24 divisors (see below), whose sum is σ = 542158848. Its totient is φ = 96813600.

The previous prime is 250102417. The next prime is 250102421. The reversal of 250102420 is 24201052.

It is a junction number, because it is equal to n+sod(n) for n = 250102394 and 250102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250102421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201076 + ... + 202315.

It is an arithmetic number, because the mean of its divisors is an integer number (22589952).

Almost surely, 2250102420 is an apocalyptic number.

250102420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250102420 is an abundant number, since it is smaller than the sum of its proper divisors (292056428).

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

250102420 is a wasteful number, since it uses less digits than its factorization.

250102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403431 (or 403429 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 250102420 is about 15814.6267739710. The cubic root of 250102420 is about 630.0465406115.

Adding to 250102420 its reverse (24201052), we get a palindrome (274303472).

The spelling of 250102420 in words is "two hundred fifty million, one hundred two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 403391 806782 1613564 2016955 4033910 8067820 12505121 25010242 50020484 62525605 125051210 250102420