79428650 has 48 divisors (see below), whose sum is σ = 169751040. Its totient is φ = 27086400.

The previous prime is 79428619. The next prime is 79428659. The reversal of 79428650 is 5682497.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79428598 and 79428607.

It is not an unprimeable number, because it can be changed into a prime (79428659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79655 + ... + 80645.

It is an arithmetic number, because the mean of its divisors is an integer number (3536480).

Almost surely, 2^79428650 is an apocalyptic number.

79428650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79428650 is an abundant number, since it is smaller than the sum of its proper divisors (90322390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79428650 is a wasteful number, since it uses less digits than its factorization.

79428650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 79428650 is about 8912.2752426078. The cubic root of 79428650 is about 429.8587060560.

The spelling of 79428650 in words is "seventy-nine million, four hundred twenty-eight thousand, six hundred fifty".