74490772 has 6 divisors (see below), whose sum is σ = 130358858. Its totient is φ = 37245384.

The previous prime is 74490769. The next prime is 74490791. The reversal of 74490772 is 27709447.

It can be written as a sum of positive squares in only one way, i.e., 65999376 + 8491396 = 8124^2 + 2914^2 .

It is a super-2 number, since 2×74490772² = 11097750226311968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9311343 + ... + 9311350.

Almost surely, 2^74490772 is an apocalyptic number.

It is an amenable number.

74490772 is a deficient number, since it is larger than the sum of its proper divisors (55868086).

74490772 is a wasteful number, since it uses less digits than its factorization.

74490772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18622697 (or 18622695 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 74490772 is about 8630.8036705744. The cubic root of 74490772 is about 420.7597209370.

The spelling of 74490772 in words is "seventy-four million, four hundred ninety thousand, seven hundred seventy-two".