30425928 has 64 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 9268224.

The previous prime is 30425917. The next prime is 30425939. The reversal of 30425928 is 82952403.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30425917) and next prime (30425939).

It is a super-2 number, since 2×30425928² = 1851474189322368, which contains 22 as substring.

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, 34825 + ... + 35687.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^30425928 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 30425928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41368320).

30425928 is an abundant number, since it is smaller than the sum of its proper divisors (52310712).

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

30425928 is a wasteful number, since it uses less digits than its factorization.

30425928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 30425928 is about 5515.9702682302. The cubic root of 30425928 is about 312.1868538846.

The spelling of 30425928 in words is "thirty million, four hundred twenty-five thousand, nine hundred twenty-eight".