36991992 has 16 divisors (see below), whose sum is σ = 92480040. Its totient is φ = 12330656.

The previous prime is 36991991. The next prime is 36992009. The reversal of 36991992 is 29919963.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36991991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770643 + ... + 770690.

Almost surely, 2^36991992 is an apocalyptic number.

It is an amenable number.

36991992 is an abundant number, since it is smaller than the sum of its proper divisors (55488048).

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

36991992 is a wasteful number, since it uses less digits than its factorization.

36991992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541342 (or 1541338 counting only the distinct ones).

The product of its digits is 236196, while the sum is 48.

The square root of 36991992 is about 6082.1042411323. The cubic root of 36991992 is about 333.1981434007.

The spelling of 36991992 in words is "thirty-six million, nine hundred ninety-one thousand, nine hundred ninety-two".