74284144 has 20 divisors (see below), whose sum is σ = 157010040. Its totient is φ = 33765440.

The previous prime is 74284139. The next prime is 74284159. The reversal of 74284144 is 44148247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210859 + ... + 211210.

It is an arithmetic number, because the mean of its divisors is an integer number (7850502).

Almost surely, 2^74284144 is an apocalyptic number.

It is an amenable number.

74284144 is an abundant number, since it is smaller than the sum of its proper divisors (82725896).

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

74284144 is a wasteful number, since it uses less digits than its factorization.

74284144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422088 (or 422082 counting only the distinct ones).

The product of its digits is 28672, while the sum is 34.

The square root of 74284144 is about 8618.8249779190. The cubic root of 74284144 is about 420.3703158741.

The spelling of 74284144 in words is "seventy-four million, two hundred eighty-four thousand, one hundred forty-four".