113781572 has 12 divisors (see below), whose sum is σ = 199281936. Its totient is φ = 56843880.

The previous prime is 113781571. The next prime is 113781593. The reversal of 113781572 is 275187311.

It is a happy number.

It is a super-2 number, since 2×113781572² = 25892492253582368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113781571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5954 + ... + 16217.

It is an arithmetic number, because the mean of its divisors is an integer number (16606828).

Almost surely, 2^113781572 is an apocalyptic number.

It is an amenable number.

113781572 is a deficient number, since it is larger than the sum of its proper divisors (85500364).

113781572 is a wasteful number, since it uses less digits than its factorization.

113781572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23458 (or 23456 counting only the distinct ones).

The product of its digits is 11760, while the sum is 35.

The square root of 113781572 is about 10666.8445193506. The cubic root of 113781572 is about 484.5708777365.

The spelling of 113781572 in words is "one hundred thirteen million, seven hundred eighty-one thousand, five hundred seventy-two".