74072156 has 6 divisors (see below), whose sum is σ = 129626280. Its totient is φ = 37036076.

The previous prime is 74072147. The next prime is 74072161. The reversal of 74072156 is 65127047.

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, 9259016 + ... + 9259023.

It is an arithmetic number, because the mean of its divisors is an integer number (21604380).

Almost surely, 2^74072156 is an apocalyptic number.

It is an amenable number.

74072156 is a deficient number, since it is larger than the sum of its proper divisors (55554124).

74072156 is a wasteful number, since it uses less digits than its factorization.

74072156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518043 (or 18518041 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 74072156 is about 8606.5182274832. The cubic root of 74072156 is about 419.9700583342.

The spelling of 74072156 in words is "seventy-four million, seventy-two thousand, one hundred fifty-six".