15991130 has 16 divisors (see below), whose sum is σ = 28832544. Its totient is φ = 6385680.

The previous prime is 15991121. The next prime is 15991159. The reversal of 15991130 is 3119951.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15991093 and 15991102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7925 + ... + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (1802034).

Almost surely, 2^15991130 is an apocalyptic number.

15991130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15991130 is a deficient number, since it is larger than the sum of its proper divisors (12841414).

15991130 is a wasteful number, since it uses less digits than its factorization.

15991130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 15991130 is about 3998.8910962916. The cubic root of 15991130 is about 251.9376367894.

The spelling of 15991130 in words is "fifteen million, nine hundred ninety-one thousand, one hundred thirty".