74128707 has 12 divisors (see below), whose sum is σ = 107444064. Its totient is φ = 49248720.

The previous prime is 74128699. The next prime is 74128739. The reversal of 74128707 is 70782147.

It is not a de Polignac number, because 74128707 - 2³ = 74128699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74128777) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11419 + ... + 16692.

It is an arithmetic number, because the mean of its divisors is an integer number (8953672).

Almost surely, 2^74128707 is an apocalyptic number.

74128707 is a deficient number, since it is larger than the sum of its proper divisors (33315357).

74128707 is a wasteful number, since it uses less digits than its factorization.

74128707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28410 (or 28407 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 74128707 is about 8609.8029594178. The cubic root of 74128707 is about 420.0769076850.

The spelling of 74128707 in words is "seventy-four million, one hundred twenty-eight thousand, seven hundred seven".