74840388 has 24 divisors (see below), whose sum is σ = 199574592. Its totient is φ = 21382944.

The previous prime is 74840377. The next prime is 74840393. The reversal of 74840388 is 88304847.

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

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, 445395 + ... + 445562.

It is an arithmetic number, because the mean of its divisors is an integer number (8315608).

Almost surely, 2^74840388 is an apocalyptic number.

It is an amenable number.

74840388 is an abundant number, since it is smaller than the sum of its proper divisors (124734204).

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

74840388 is a wasteful number, since it uses less digits than its factorization.

74840388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890971 (or 890969 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 74840388 is about 8651.0339266471. The cubic root of 74840388 is about 421.4169602360.

The spelling of 74840388 in words is "seventy-four million, eight hundred forty thousand, three hundred eighty-eight".