113633978 has 4 divisors (see below), whose sum is σ = 170450970. Its totient is φ = 56816988.

The previous prime is 113633969. The next prime is 113634011. The reversal of 113633978 is 879336311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72199009 + 41434969 = 8497^2 + 6437^2 .

It is a super-2 number, since 2×113633978² = 25825361912208968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28408493 + ... + 28408496.

Almost surely, 2^113633978 is an apocalyptic number.

113633978 is a deficient number, since it is larger than the sum of its proper divisors (56816992).

113633978 is an equidigital number, since it uses as much as digits as its factorization.

113633978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56816991.

The product of its digits is 81648, while the sum is 41.

The square root of 113633978 is about 10659.9239209293. The cubic root of 113633978 is about 484.3612635328.

The spelling of 113633978 in words is "one hundred thirteen million, six hundred thirty-three thousand, nine hundred seventy-eight".