15317930 has 8 divisors (see below), whose sum is σ = 27572292. Its totient is φ = 6127168.

The previous prime is 15317927. The next prime is 15317957. The reversal of 15317930 is 3971351.

It can be written as a sum of positive squares in 2 ways, for example, as 13697401 + 1620529 = 3701^2 + 1273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 15317893 and 15317902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765887 + ... + 765906.

Almost surely, 2^15317930 is an apocalyptic number.

15317930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15317930 is a deficient number, since it is larger than the sum of its proper divisors (12254362).

15317930 is a wasteful number, since it uses less digits than its factorization.

15317930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531800.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 15317930 is about 3913.8127190759. The cubic root of 15317930 is about 248.3514463113.

The spelling of 15317930 in words is "fifteen million, three hundred seventeen thousand, nine hundred thirty".