113256640 has 168 divisors, whose sum is σ = 325233792. Its totient is φ = 37416960.

The previous prime is 113256631. The next prime is 113256643. The reversal of 113256640 is 46652311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 113256599 and 113256608.

It is not an unprimeable number, because it can be changed into a prime (113256643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 485964 + ... + 486196.

Almost surely, 2^113256640 is an apocalyptic number.

113256640 is a gapful number since it is divisible by the number (10) 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 113256640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162616896).

113256640 is an abundant number, since it is smaller than the sum of its proper divisors (211977152).

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

113256640 is a wasteful number, since it uses less digits than its factorization.

113256640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 113256640 is about 10642.2102967382. The cubic root of 113256640 is about 483.8245385434.

The spelling of 113256640 in words is "one hundred thirteen million, two hundred fifty-six thousand, six hundred forty".