15009994 has 16 divisors (see below), whose sum is σ = 23473800. Its totient is φ = 7189504.

The previous prime is 15009989. The next prime is 15010001. The reversal of 15009994 is 49990051.

It can be written as a sum of positive squares in 4 ways, for example, as 13286025 + 1723969 = 3645^2 + 1313^2 .

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, 7002 + ... + 8890.

Almost surely, 2^15009994 is an apocalyptic number.

15009994 is a deficient number, since it is larger than the sum of its proper divisors (8463806).

15009994 is a wasteful number, since it uses less digits than its factorization.

15009994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 15009994 is about 3874.2733512234. The cubic root of 15009994 is about 246.6759671033.

The spelling of 15009994 in words is "fifteen million, nine thousand, nine hundred ninety-four".