30987434072 has 32 divisors (see below), whose sum is σ = 67392721920. Its totient is φ = 13082113440.

The previous prime is 30987434053. The next prime is 30987434081. The reversal of 30987434072 is 27043478903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4125704 + ... + 4133207.

It is an arithmetic number, because the mean of its divisors is an integer number (2106022560).

Almost surely, 2^30987434072 is an apocalyptic number.

It is an amenable number.

30987434072 is an abundant number, since it is smaller than the sum of its proper divisors (36405287848).

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

30987434072 is a wasteful number, since it uses less digits than its factorization.

30987434072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258991 (or 8258987 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 30987434072 in words is "thirty billion, nine hundred eighty-seven million, four hundred thirty-four thousand, seventy-two".