11761880 has 32 divisors (see below), whose sum is σ = 28501200. Its totient is φ = 4342656.

The previous prime is 11761877. The next prime is 11761889. The reversal of 11761880 is 8816711.

It is a super-2 number, since 2×11761880² = 276683642268800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11761889) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10790 + ... + 11829.

Almost surely, 2^11761880 is an apocalyptic number.

11761880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11761880 is an abundant number, since it is smaller than the sum of its proper divisors (16739320).

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

11761880 is a wasteful number, since it uses less digits than its factorization.

11761880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22643 (or 22639 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 11761880 is about 3429.5597385087. The cubic root of 11761880 is about 227.4183904038.

The spelling of 11761880 in words is "eleven million, seven hundred sixty-one thousand, eight hundred eighty".