30987473520 has 320 divisors, whose sum is σ = 105449250816. Its totient is φ = 7493713920.

The previous prime is 30987473513. The next prime is 30987473549. The reversal of 30987473520 is 2537478903.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 30987473520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42623397 + ... + 42624123.

Almost surely, 2^30987473520 is an apocalyptic number.

30987473520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30987473520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52724625408).

30987473520 is an abundant number, since it is smaller than the sum of its proper divisors (74461777296).

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

30987473520 is a wasteful number, since it uses less digits than its factorization.

30987473520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 30987473520 in words is "thirty billion, nine hundred eighty-seven million, four hundred seventy-three thousand, five hundred twenty".