15530730 has 32 divisors (see below), whose sum is σ = 37395648. Its totient is φ = 4128000.

The previous prime is 15530719. The next prime is 15530743. The reversal of 15530730 is 3703551.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15530730.

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, 11385 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (1168614).

Almost surely, 2^15530730 is an apocalyptic number.

15530730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15530730 is an abundant number, since it is smaller than the sum of its proper divisors (21864918).

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

15530730 is a wasteful number, since it uses less digits than its factorization.

15530730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 1575, while the sum is 24.

The square root of 15530730 is about 3940.9047184625. The cubic root of 15530730 is about 249.4962121398.

The spelling of 15530730 in words is "fifteen million, five hundred thirty thousand, seven hundred thirty".