11729880 has 64 divisors (see below), whose sum is σ = 39103200. Its totient is φ = 3127680.

The previous prime is 11729857. The next prime is 11729899. The reversal of 11729880 is 8892711.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 4351 + ... + 6510.

Almost surely, 2^11729880 is an apocalyptic number.

11729880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11729880 is an abundant number, since it is smaller than the sum of its proper divisors (27373320).

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

11729880 is a wasteful number, since it uses less digits than its factorization.

11729880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10881 (or 10871 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 11729880 is about 3424.8912391491. The cubic root of 11729880 is about 227.2119608694.

The spelling of 11729880 in words is "eleven million, seven hundred twenty-nine thousand, eight hundred eighty".