74216872 has 8 divisors (see below), whose sum is σ = 139156650. Its totient is φ = 37108432.

The previous prime is 74216861. The next prime is 74216893. The reversal of 74216872 is 27861247.

It can be written as a sum of positive squares in only one way, i.e., 74200996 + 15876 = 8614^2 + 126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4638547 + ... + 4638562.

Almost surely, 2^74216872 is an apocalyptic number.

It is an amenable number.

74216872 is a deficient number, since it is larger than the sum of its proper divisors (64939778).

74216872 is a wasteful number, since it uses less digits than its factorization.

74216872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277115 (or 9277111 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 74216872 is about 8614.9214738151. The cubic root of 74216872 is about 420.2433812362.

The spelling of 74216872 in words is "seventy-four million, two hundred sixteen thousand, eight hundred seventy-two".