79628905 has 32 divisors (see below), whose sum is σ = 104480640. Its totient is φ = 58060800.

The previous prime is 79628881. The next prime is 79628917. The reversal of 79628905 is 50982697.

It is not a de Polignac number, because 79628905 - 2⁷ = 79628777 is a prime.

It is a super-2 number, since 2×79628905² = 12681525022998050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412489 + ... + 412681.

It is an arithmetic number, because the mean of its divisors is an integer number (3265020).

Almost surely, 2^79628905 is an apocalyptic number.

It is an amenable number.

79628905 is a deficient number, since it is larger than the sum of its proper divisors (24851735).

79628905 is a wasteful number, since it uses less digits than its factorization.

79628905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 79628905 is about 8923.5029556783. The cubic root of 79628905 is about 430.2196552171.

The spelling of 79628905 in words is "seventy-nine million, six hundred twenty-eight thousand, nine hundred five".