12251690 has 32 divisors (see below), whose sum is σ = 24274944. Its totient is φ = 4415040.

The previous prime is 12251677. The next prime is 12251719. The reversal of 12251690 is 9615221.

It is a super-2 number, since 2×12251690² = 300207815712200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 13532 + ... + 14408.

It is an arithmetic number, because the mean of its divisors is an integer number (758592).

Almost surely, 2^12251690 is an apocalyptic number.

12251690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12251690 is a deficient number, since it is larger than the sum of its proper divisors (12023254).

12251690 is a wasteful number, since it uses less digits than its factorization.

12251690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12251690 is about 3500.2414202452. The cubic root of 12251690 is about 230.5324149826.

The spelling of 12251690 in words is "twelve million, two hundred fifty-one thousand, six hundred ninety".