28080630 has 24 divisors (see below), whose sum is σ = 73009872. Its totient is φ = 7488144.

The previous prime is 28080623. The next prime is 28080653. The reversal of 28080630 is 3608082.

28080630 is a `hidden beast` number, since 28 + 0 + 8 + 0 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28080594 and 28080603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155914 + ... + 156093.

It is an arithmetic number, because the mean of its divisors is an integer number (3042078).

Almost surely, 2^28080630 is an apocalyptic number.

28080630 is an abundant number, since it is smaller than the sum of its proper divisors (44929242).

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

28080630 is a wasteful number, since it uses less digits than its factorization.

28080630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312020 (or 312017 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28080630 is about 5299.1159640076. The cubic root of 28080630 is about 303.9500942431.

The spelling of 28080630 in words is "twenty-eight million, eighty thousand, six hundred thirty".