74389972 has 6 divisors (see below), whose sum is σ = 130182458. Its totient is φ = 37194984.

The previous prime is 74389969. The next prime is 74390039. The reversal of 74389972 is 27998347.

It can be written as a sum of positive squares in only one way, i.e., 59536656 + 14853316 = 7716^2 + 3854^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9298743 + ... + 9298750.

Almost surely, 2^74389972 is an apocalyptic number.

It is an amenable number.

74389972 is a deficient number, since it is larger than the sum of its proper divisors (55792486).

74389972 is a wasteful number, since it uses less digits than its factorization.

74389972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597497 (or 18597495 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The square root of 74389972 is about 8624.9621448445. The cubic root of 74389972 is about 420.5698462995.

The spelling of 74389972 in words is "seventy-four million, three hundred eighty-nine thousand, nine hundred seventy-two".