112890978 has 12 divisors (see below), whose sum is σ = 244597158. Its totient is φ = 37630320.

The previous prime is 112890971. The next prime is 112891001. The reversal of 112890978 is 879098211.

It can be written as a sum of positive squares in only one way, i.e., 112848129 + 42849 = 10623^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (112890971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3135843 + ... + 3135878.

Almost surely, 2^112890978 is an apocalyptic number.

112890978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

112890978 is an abundant number, since it is smaller than the sum of its proper divisors (131706180).

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

112890978 is a wasteful number, since it uses less digits than its factorization.

112890978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271729 (or 6271726 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 112890978 is about 10625.0166117517. The cubic root of 112890978 is about 483.3032828985.

The spelling of 112890978 in words is "one hundred twelve million, eight hundred ninety thousand, nine hundred seventy-eight".