79944728 has 8 divisors (see below), whose sum is σ = 149896380. Its totient is φ = 39972360.

The previous prime is 79944721. The next prime is 79944731. The reversal of 79944728 is 82744997.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79944721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996538 + ... + 4996553.

Almost surely, 2^79944728 is an apocalyptic number.

It is an amenable number.

79944728 is a deficient number, since it is larger than the sum of its proper divisors (69951652).

79944728 is a wasteful number, since it uses less digits than its factorization.

79944728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9993097 (or 9993093 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 79944728 is about 8941.1815773979. The cubic root of 79944728 is about 430.7876818824.

The spelling of 79944728 in words is "seventy-nine million, nine hundred forty-four thousand, seven hundred twenty-eight".