30650928 has 80 divisors (see below), whose sum is σ = 98731776. Its totient is φ = 7960320.

The previous prime is 30650897. The next prime is 30650947. The reversal of 30650928 is 82905603.

It is a happy number.

It is a super-2 number, since 2×30650928² = 1878958774522368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451 + ... + 7842.

Almost surely, 2^30650928 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 30650928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49365888).

30650928 is an abundant number, since it is smaller than the sum of its proper divisors (68080848).

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

30650928 is a wasteful number, since it uses less digits than its factorization.

30650928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8322 (or 8316 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 30650928 is about 5536.3280249638. The cubic root of 30650928 is about 312.9545062100.

The spelling of 30650928 in words is "thirty million, six hundred fifty thousand, nine hundred twenty-eight".