30521075948 has 48 divisors (see below), whose sum is σ = 59300035200. Its totient is φ = 13627735680.

The previous prime is 30521075929. The next prime is 30521075957. The reversal of 30521075948 is 84957012503.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 30521075899 and 30521075908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4173311 + ... + 4180617.

It is an arithmetic number, because the mean of its divisors is an integer number (1235417400).

Almost surely, 2^30521075948 is an apocalyptic number.

It is an amenable number.

30521075948 is a deficient number, since it is larger than the sum of its proper divisors (28778959252).

30521075948 is a wasteful number, since it uses less digits than its factorization.

30521075948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8990 (or 8988 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 30521075948 in words is "thirty billion, five hundred twenty-one million, seventy-five thousand, nine hundred forty-eight".