30626988 has 24 divisors (see below), whose sum is σ = 81672192. Its totient is φ = 8750544.

The previous prime is 30626983. The next prime is 30627017. The reversal of 30626988 is 88962603.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (30626983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182220 + ... + 182387.

It is an arithmetic number, because the mean of its divisors is an integer number (3403008).

Almost surely, 2^30626988 is an apocalyptic number.

It is an amenable number.

30626988 is an abundant number, since it is smaller than the sum of its proper divisors (51045204).

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

30626988 is a wasteful number, since it uses less digits than its factorization.

30626988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364621 (or 364619 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 30626988 is about 5534.1655197509. The cubic root of 30626988 is about 312.8730069668.

The spelling of 30626988 in words is "thirty million, six hundred twenty-six thousand, nine hundred eighty-eight".