112920813 has 12 divisors (see below), whose sum is σ = 163257120. Its totient is φ = 75211656.

The previous prime is 112920803. The next prime is 112920827. The reversal of 112920813 is 318029211.

It is not a de Polignac number, because 112920813 - 2¹⁷ = 112789741 is a prime.

It is a super-2 number, since 2×112920813² = 25502220017161938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112920803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5878 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (13604760).

Almost surely, 2^112920813 is an apocalyptic number.

It is an amenable number.

112920813 is a deficient number, since it is larger than the sum of its proper divisors (50336307).

112920813 is a wasteful number, since it uses less digits than its factorization.

112920813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11488 (or 11485 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 112920813 is about 10626.4205168062. The cubic root of 112920813 is about 483.3458551915.

The spelling of 112920813 in words is "one hundred twelve million, nine hundred twenty thousand, eight hundred thirteen".