12981506 has 16 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 6073920.

The previous prime is 12981491. The next prime is 12981511. The reversal of 12981506 is 60518921.

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, 5495 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 2^12981506 is an apocalyptic number.

12981506 is a deficient number, since it is larger than the sum of its proper divisors (7754494).

12981506 is a wasteful number, since it uses less digits than its factorization.

12981506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12981506 is about 3602.9857063275. The cubic root of 12981506 is about 235.0219143590.

The spelling of 12981506 in words is "twelve million, nine hundred eighty-one thousand, five hundred six".