74380992 has 56 divisors (see below), whose sum is σ = 224918016. Its totient is φ = 21251328.

The previous prime is 74380963. The next prime is 74380993. The reversal of 74380992 is 29908347.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (74380993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26328 + ... + 29015.

Almost surely, 2^74380992 is an apocalyptic number.

It is an amenable number.

74380992 is an abundant number, since it is smaller than the sum of its proper divisors (150537024).

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

74380992 is a wasteful number, since it uses less digits than its factorization.

74380992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55365 (or 55355 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 74380992 is about 8624.4415471380. The cubic root of 74380992 is about 420.5529225615.

The spelling of 74380992 in words is "seventy-four million, three hundred eighty thousand, nine hundred ninety-two".