30428608 has 84 divisors (see below), whose sum is σ = 72737472. Its totient is φ = 12579840.

The previous prime is 30428603. The next prime is 30428611. The reversal of 30428608 is 80682403.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 30428608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30428603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97060 + ... + 97372.

Almost surely, 2^30428608 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 30428608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36368736).

30428608 is an abundant number, since it is smaller than the sum of its proper divisors (42308864).

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

30428608 is a wasteful number, since it uses less digits than its factorization.

30428608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30428608 is about 5516.2131938496. The cubic root of 30428608 is about 312.1960197097.

The spelling of 30428608 in words is "thirty million, four hundred twenty-eight thousand, six hundred eight".