15005138 has 8 divisors (see below), whose sum is σ = 22558332. Its totient is φ = 7485696.

The previous prime is 15005129. The next prime is 15005149. The reversal of 15005138 is 83150051.

It can be written as a sum of positive squares in 2 ways, for example, as 14922769 + 82369 = 3863^2 + 287^2 .

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

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, 7295 + ... + 9122.

Almost surely, 2^15005138 is an apocalyptic number.

15005138 is a deficient number, since it is larger than the sum of its proper divisors (7553194).

15005138 is a wasteful number, since it uses less digits than its factorization.

15005138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16876.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 15005138 is about 3873.6466023632. The cubic root of 15005138 is about 246.6493628800.

Adding to 15005138 its reverse (83150051), we get a palindrome (98155189).

The spelling of 15005138 in words is "fifteen million, five thousand, one hundred thirty-eight".