74921156 has 6 divisors (see below), whose sum is σ = 131112030. Its totient is φ = 37460576.

The previous prime is 74921131. The next prime is 74921167. The reversal of 74921156 is 65112947.

It can be written as a sum of positive squares in only one way, i.e., 41165056 + 33756100 = 6416^2 + 5810^2 .

It is a super-2 number, since 2×74921156² = 11226359232752672, which contains 22 as substring.

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, 9365141 + ... + 9365148.

It is an arithmetic number, because the mean of its divisors is an integer number (21852005).

Almost surely, 2^74921156 is an apocalyptic number.

It is an amenable number.

74921156 is a deficient number, since it is larger than the sum of its proper divisors (56190874).

74921156 is a wasteful number, since it uses less digits than its factorization.

74921156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18730293 (or 18730291 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 74921156 is about 8655.7007804106. The cubic root of 74921156 is about 421.5685039368.

The spelling of 74921156 in words is "seventy-four million, nine hundred twenty-one thousand, one hundred fifty-six".