12539290 has 16 divisors (see below), whose sum is σ = 22675968. Its totient is φ = 4992336.

The previous prime is 12539279. The next prime is 12539309. The reversal of 12539290 is 9293521.

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, 582 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (1417248).

Almost surely, 2^12539290 is an apocalyptic number.

12539290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12539290 is a deficient number, since it is larger than the sum of its proper divisors (10136678).

12539290 is a wasteful number, since it uses less digits than its factorization.

12539290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 12539290 is about 3541.0859916133. The cubic root of 12539290 is about 232.3223447275.

The spelling of 12539290 in words is "twelve million, five hundred thirty-nine thousand, two hundred ninety".