15320970730 has 64 divisors (see below), whose sum is σ = 31019345280. Its totient is φ = 5410692864.

The previous prime is 15320970719. The next prime is 15320970787. The reversal of 15320970730 is 3707902351.

It is a super-3 number, since 3×15320970730³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 15320970730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256797 + ... + 310783.

It is an arithmetic number, because the mean of its divisors is an integer number (484677270).

Almost surely, 2^15320970730 is an apocalyptic number.

15320970730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15320970730 is an abundant number, since it is smaller than the sum of its proper divisors (15698374550).

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

15320970730 is a wasteful number, since it uses less digits than its factorization.

15320970730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54103.

The product of its (nonzero) digits is 39690, while the sum is 37.

The spelling of 15320970730 in words is "fifteen billion, three hundred twenty million, nine hundred seventy thousand, seven hundred thirty".