30914928 has 120 divisors (see below), whose sum is σ = 97783920. Its totient is φ = 9031680.

The previous prime is 30914909. The next prime is 30914963. The reversal of 30914928 is 82941903.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30914892 and 30914901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45600 + ... + 46272.

It is an arithmetic number, because the mean of its divisors is an integer number (814866).

Almost surely, 2^30914928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30914928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48891960).

30914928 is an abundant number, since it is smaller than the sum of its proper divisors (66868992).

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

30914928 is a wasteful number, since it uses less digits than its factorization.

30914928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 30914928 is about 5560.1194231779. The cubic root of 30914928 is about 313.8504433359.

The spelling of 30914928 in words is "thirty million, nine hundred fourteen thousand, nine hundred twenty-eight".