30228639 has 48 divisors (see below), whose sum is σ = 50342400. Its totient is φ = 16039296.

The previous prime is 30228637. The next prime is 30228659. The reversal of 30228639 is 93682203.

It is not a de Polignac number, because 30228639 - 2¹ = 30228637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30228637) 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 47 ways as a sum of consecutive naturals, for example, 220579 + ... + 220715.

It is an arithmetic number, because the mean of its divisors is an integer number (1048800).

Almost surely, 2^30228639 is an apocalyptic number.

30228639 is a deficient number, since it is larger than the sum of its proper divisors (20113761).

30228639 is a wasteful number, since it uses less digits than its factorization.

30228639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30228639 is about 5498.0577479688. The cubic root of 30228639 is about 311.5106254003.

The spelling of 30228639 in words is "thirty million, two hundred twenty-eight thousand, six hundred thirty-nine".