30628540 has 24 divisors (see below), whose sum is σ = 64536192. Its totient is φ = 12210240.

The previous prime is 30628529. The next prime is 30628547. The reversal of 30628540 is 4582603.

It is a junction number, because it is equal to n+sod(n) for n = 30628499 and 30628508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30628547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3925 + ... + 8755.

It is an arithmetic number, because the mean of its divisors is an integer number (2689008).

Almost surely, 2^30628540 is an apocalyptic number.

It is an amenable number.

30628540 is an abundant number, since it is smaller than the sum of its proper divisors (33907652).

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

30628540 is a wasteful number, since it uses less digits than its factorization.

30628540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5155 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30628540 is about 5534.3057378501. The cubic root of 30628540 is about 312.8782917470.

The spelling of 30628540 in words is "thirty million, six hundred twenty-eight thousand, five hundred forty".