12591016 has 16 divisors (see below), whose sum is σ = 24997140. Its totient is φ = 5925120.

The previous prime is 12590987. The next prime is 12591023. The reversal of 12591016 is 61019521.

12591016 = T₄₄₅ + T₄₄₆ + ... + T₅₄₆.

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 16900 = 3546^2 + 130^2 .

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, 46155 + ... + 46426.

Almost surely, 2^12591016 is an apocalyptic number.

It is an amenable number.

12591016 is a deficient number, since it is larger than the sum of its proper divisors (12406124).

12591016 is a wasteful number, since it uses less digits than its factorization.

12591016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92604 (or 92600 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 12591016 is about 3548.3821665655. The cubic root of 12591016 is about 232.6413585205.

The spelling of 12591016 in words is "twelve million, five hundred ninety-one thousand, sixteen".