30715828 has 24 divisors (see below), whose sum is σ = 63151200. Its totient is φ = 12887520.

The previous prime is 30715793. The next prime is 30715831. The reversal of 30715828 is 82851703.

It is a junction number, because it is equal to n+sod(n) for n = 30715793 and 30715802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26278 + ... + 27421.

It is an arithmetic number, because the mean of its divisors is an integer number (2631300).

Almost surely, 2^30715828 is an apocalyptic number.

It is an amenable number.

30715828 is an abundant number, since it is smaller than the sum of its proper divisors (32435372).

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

30715828 is a wasteful number, since it uses less digits than its factorization.

30715828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53727 (or 53725 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 30715828 is about 5542.1862112347. The cubic root of 30715828 is about 313.1752328497.

The spelling of 30715828 in words is "thirty million, seven hundred fifteen thousand, eight hundred twenty-eight".