30021438748 has 48 divisors (see below), whose sum is σ = 62764441600. Its totient is φ = 12293648640.

The previous prime is 30021438697. The next prime is 30021438749. The reversal of 30021438748 is 84783412003.

It is a self number, because there is not a number n which added to its sum of digits gives 30021438748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021438749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150333 + ... + 287476.

Almost surely, 2^30021438748 is an apocalyptic number.

It is an amenable number.

30021438748 is an abundant number, since it is smaller than the sum of its proper divisors (32743002852).

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

30021438748 is a wasteful number, since it uses less digits than its factorization.

30021438748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437930 (or 437928 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 30021438748 in words is "thirty billion, twenty-one million, four hundred thirty-eight thousand, seven hundred forty-eight".