15730668 has 18 divisors (see below), whose sum is σ = 39763724. Its totient is φ = 5243544.

The previous prime is 15730633. The next prime is 15730669. The reversal of 15730668 is 86603751.

15730668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 436963 = 15730668 / (1 + 5 + 7 + 3 + 0 + 6 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (15730669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218446 + ... + 218517.

Almost surely, 2^15730668 is an apocalyptic number.

15730668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

15730668 is an abundant number, since it is smaller than the sum of its proper divisors (24033056).

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

15730668 is a wasteful number, since it uses less digits than its factorization.

15730668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436973 (or 436968 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 15730668 is about 3966.1906156916. The cubic root of 15730668 is about 250.5622970068.

The spelling of 15730668 in words is "fifteen million, seven hundred thirty thousand, six hundred sixty-eight".