74388492 has 36 divisors (see below), whose sum is σ = 190850296. Its totient is φ = 24425280.

The previous prime is 74388469. The next prime is 74388493. The reversal of 74388492 is 29488347.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (74388493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13009 + ... + 17832.

Almost surely, 2^74388492 is an apocalyptic number.

It is an amenable number.

74388492 is an abundant number, since it is smaller than the sum of its proper divisors (116461804).

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

74388492 is a wasteful number, since it uses less digits than its factorization.

74388492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30918 (or 30913 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 74388492 is about 8624.8763469397. The cubic root of 74388492 is about 420.5670571803.

The spelling of 74388492 in words is "seventy-four million, three hundred eighty-eight thousand, four hundred ninety-two".