12972490 has 8 divisors (see below), whose sum is σ = 23350500. Its totient is φ = 5188992.

The previous prime is 12972461. The next prime is 12972521. The reversal of 12972490 is 9427921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12723489 + 249001 = 3567^2 + 499^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648615 + ... + 648634.

Almost surely, 2^12972490 is an apocalyptic number.

12972490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12972490 is a deficient number, since it is larger than the sum of its proper divisors (10378010).

12972490 is a wasteful number, since it uses less digits than its factorization.

12972490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297256.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12972490 is about 3601.7343044706. The cubic root of 12972490 is about 234.9674921081.

The spelling of 12972490 in words is "twelve million, nine hundred seventy-two thousand, four hundred ninety".