12912490 has 8 divisors (see below), whose sum is σ = 23242500. Its totient is φ = 5164992.

The previous prime is 12912479. The next prime is 12912509. The reversal of 12912490 is 9421921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10374841 + 2537649 = 3221^2 + 1593^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645615 + ... + 645634.

Almost surely, 2^12912490 is an apocalyptic number.

12912490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12912490 is a deficient number, since it is larger than the sum of its proper divisors (10330010).

12912490 is a wasteful number, since it uses less digits than its factorization.

12912490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291256.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12912490 is about 3593.3953303248. The cubic root of 12912490 is about 234.6046771345.

It can be divided in two parts, 1 and 2912490, that added together give a triangular number (2912491 = T₂₄₁₃).

The spelling of 12912490 in words is "twelve million, nine hundred twelve thousand, four hundred ninety".