77990192 has 40 divisors (see below), whose sum is σ = 174084096. Its totient is φ = 33155136.

The previous prime is 77990183. The next prime is 77990201. The reversal of 77990192 is 29109977.

It is an interprime number because it is at equal distance from previous prime (77990183) and next prime (77990201).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11483 + ... + 16965.

Almost surely, 2^77990192 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 77990192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87042048).

77990192 is an abundant number, since it is smaller than the sum of its proper divisors (96093904).

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

77990192 is a wasteful number, since it uses less digits than its factorization.

77990192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625 (or 5619 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 77990192 is about 8831.2055802138. The cubic root of 77990192 is about 427.2479587711.

The spelling of 77990192 in words is "seventy-seven million, nine hundred ninety thousand, one hundred ninety-two".