113555778 has 32 divisors (see below), whose sum is σ = 261550080. Its totient is φ = 32195280.

The previous prime is 113555711. The next prime is 113555779. The reversal of 113555778 is 877555311.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (113555779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4818 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (8173440).

Almost surely, 2^113555778 is an apocalyptic number.

113555778 is an abundant number, since it is smaller than the sum of its proper divisors (147994302).

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

113555778 is a wasteful number, since it uses less digits than its factorization.

113555778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20782.

The product of its digits is 147000, while the sum is 42.

The square root of 113555778 is about 10656.2553460397. The cubic root of 113555778 is about 484.2501296874.

The spelling of 113555778 in words is "one hundred thirteen million, five hundred fifty-five thousand, seven hundred seventy-eight".