74155730 has 32 divisors (see below), whose sum is σ = 146017728. Its totient is φ = 26891200.

The previous prime is 74155729. The next prime is 74155843. The reversal of 74155730 is 3755147.

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 in 15 ways as a sum of consecutive naturals, for example, 53324 + ... + 54696.

It is an arithmetic number, because the mean of its divisors is an integer number (4563054).

Almost surely, 2^74155730 is an apocalyptic number.

74155730 is a deficient number, since it is larger than the sum of its proper divisors (71861998).

74155730 is a wasteful number, since it uses less digits than its factorization.

74155730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 74155730 is about 8611.3721322447. The cubic root of 74155730 is about 420.1279466577.

The spelling of 74155730 in words is "seventy-four million, one hundred fifty-five thousand, seven hundred thirty".