12651490 has 32 divisors (see below), whose sum is σ = 23452416. Its totient is φ = 4912320.

The previous prime is 12651487. The next prime is 12651491. The reversal of 12651490 is 9415621.

It is not an unprimeable number, because it can be changed into a prime (12651491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73044 + ... + 73216.

It is an arithmetic number, because the mean of its divisors is an integer number (732888).

Almost surely, 2^12651490 is an apocalyptic number.

12651490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12651490 is a deficient number, since it is larger than the sum of its proper divisors (10800926).

12651490 is a wasteful number, since it uses less digits than its factorization.

12651490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12651490 is about 3556.8933073681. The cubic root of 12651490 is about 233.0132186254.

The spelling of 12651490 in words is "twelve million, six hundred fifty-one thousand, four hundred ninety".