74128916 has 12 divisors (see below), whose sum is σ = 130101888. Its totient is φ = 36956952.

The previous prime is 74128913. The next prime is 74128961. The reversal of 74128916 is 61982147.

It is a self number, because there is not a number n which added to its sum of digits gives 74128916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74128913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25316 + ... + 28091.

It is an arithmetic number, because the mean of its divisors is an integer number (10841824).

Almost surely, 2^74128916 is an apocalyptic number.

It is an amenable number.

74128916 is a deficient number, since it is larger than the sum of its proper divisors (55972972).

74128916 is a wasteful number, since it uses less digits than its factorization.

74128916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53758 (or 53756 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 74128916 is about 8609.8150967370. The cubic root of 74128916 is about 420.0773024758.

The spelling of 74128916 in words is "seventy-four million, one hundred twenty-eight thousand, nine hundred sixteen".