11990580 has 48 divisors (see below), whose sum is σ = 38371200. Its totient is φ = 2740608.

The previous prime is 11990569. The next prime is 11990597. The reversal of 11990580 is 8509911.

11990580 = 51² + 52² + ... + 330².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13855 + ... + 14694.

It is an arithmetic number, because the mean of its divisors is an integer number (799400).

Almost surely, 2^11990580 is an apocalyptic number.

11990580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11990580 is an abundant number, since it is smaller than the sum of its proper divisors (26380620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11990580 is a wasteful number, since it uses less digits than its factorization.

11990580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28568 (or 28566 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 11990580 is about 3462.7416883158. The cubic root of 11990580 is about 228.8829261162.

The spelling of 11990580 in words is "eleven million, nine hundred ninety thousand, five hundred eighty".