18797912 has 32 divisors (see below), whose sum is σ = 40684800. Its totient is φ = 7975584.

The previous prime is 18797899. The next prime is 18797927. The reversal of 18797912 is 21979781.

It is a super-2 number, since 2×18797912² = 706722991119488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4139 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1271400).

Almost surely, 2^18797912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18797912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20342400).

18797912 is an abundant number, since it is smaller than the sum of its proper divisors (21886888).

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

18797912 is a wasteful number, since it uses less digits than its factorization.

18797912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375 (or 3371 counting only the distinct ones).

The product of its digits is 63504, while the sum is 44.

The square root of 18797912 is about 4335.6558904046. The cubic root of 18797912 is about 265.8907347036.

The spelling of 18797912 in words is "eighteen million, seven hundred ninety-seven thousand, nine hundred twelve".