30630028 has 24 divisors (see below), whose sum is σ = 62974800. Its totient is φ = 12851520.

The previous prime is 30630023. The next prime is 30630029. The reversal of 30630028 is 82003603.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30629990 and 30630008.

It is not an unprimeable number, because it can be changed into a prime (30630023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26203 + ... + 27346.

It is an arithmetic number, because the mean of its divisors is an integer number (2623950).

Almost surely, 2^30630028 is an apocalyptic number.

It is an amenable number.

30630028 is an abundant number, since it is smaller than the sum of its proper divisors (32344772).

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

30630028 is a wasteful number, since it uses less digits than its factorization.

30630028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53577 (or 53575 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30630028 is about 5534.4401704237. The cubic root of 30630028 is about 312.8833584306.

The spelling of 30630028 in words is "thirty million, six hundred thirty thousand, twenty-eight".