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1238072 = 231121279
BaseRepresentation
bin100101110010000111000
32022220022112
410232100320
5304104242
642311452
713344353
oct4562070
92286275
101238072
11776200
124b8588
133446b4
1424329a
15196c82
hex12e438

1238072 has 24 divisors (see below), whose sum is σ = 2553600. Its totient is φ = 562320.

The previous prime is 1238071. The next prime is 1238087. The reversal of 1238072 is 2708321.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329 + ... + 1607.

It is an arithmetic number, because the mean of its divisors is an integer number (106400).

21238072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1238072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276800).

1238072 is an abundant number, since it is smaller than the sum of its proper divisors (1315528).

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

1238072 is a wasteful number, since it uses less digits than its factorization.

1238072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1238072 is about 1112.6868382434. The cubic root of 1238072 is about 107.3779975203.

The spelling of 1238072 in words is "one million, two hundred thirty-eight thousand, seventy-two".

Divisors: 1 2 4 8 11 22 44 88 121 242 484 968 1279 2558 5116 10232 14069 28138 56276 112552 154759 309518 619036 1238072