74728633 has 16 divisors (see below), whose sum is σ = 90639360. Its totient is φ = 60222096.

The previous prime is 74728607. The next prime is 74728639. The reversal of 74728633 is 33682747.

It is a happy number.

It is not a de Polignac number, because 74728633 - 2²⁵ = 41174201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74728639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5566 + ... + 13432.

It is an arithmetic number, because the mean of its divisors is an integer number (5664960).

Almost surely, 2^74728633 is an apocalyptic number.

It is an amenable number.

74728633 is a deficient number, since it is larger than the sum of its proper divisors (15910727).

74728633 is a wasteful number, since it uses less digits than its factorization.

74728633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956.

The product of its digits is 169344, while the sum is 40.

The square root of 74728633 is about 8644.5724590635. The cubic root of 74728633 is about 421.2070962183.

The spelling of 74728633 in words is "seventy-four million, seven hundred twenty-eight thousand, six hundred thirty-three".