11812690 has 8 divisors (see below), whose sum is σ = 21262860. Its totient is φ = 4725072.

The previous prime is 11812687. The next prime is 11812709. The reversal of 11812690 is 9621811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9529569 + 2283121 = 3087^2 + 1511^2 .

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

It is a super-2 number, since 2×11812690² = 279079290072200, 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 3 ways as a sum of consecutive naturals, for example, 590625 + ... + 590644.

Almost surely, 2^11812690 is an apocalyptic number.

11812690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11812690 is a deficient number, since it is larger than the sum of its proper divisors (9450170).

11812690 is a wasteful number, since it uses less digits than its factorization.

11812690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181276.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11812690 is about 3436.9594120385. The cubic root of 11812690 is about 227.7453939464.

The spelling of 11812690 in words is "eleven million, eight hundred twelve thousand, six hundred ninety".