11912990 has 32 divisors (see below), whose sum is σ = 22450176. Its totient is φ = 4546080.

The previous prime is 11912947. The next prime is 11912993. The reversal of 11912990 is 9921911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11912993) 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, 25499 + ... + 25961.

It is an arithmetic number, because the mean of its divisors is an integer number (701568).

Almost surely, 2^11912990 is an apocalyptic number.

11912990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11912990 is a deficient number, since it is larger than the sum of its proper divisors (10537186).

11912990 is a wasteful number, since it uses less digits than its factorization.

11912990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 11912990 is about 3451.5199550343. The cubic root of 11912990 is about 228.3881635541.

The spelling of 11912990 in words is "eleven million, nine hundred twelve thousand, nine hundred ninety".