11953880 has 16 divisors (see below), whose sum is σ = 26896320. Its totient is φ = 4781536.

The previous prime is 11953867. The next prime is 11953883. The reversal of 11953880 is 8835911.

It is a self number, because there is not a number n which added to its sum of digits gives 11953880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11953883) 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 3 ways as a sum of consecutive naturals, for example, 149384 + ... + 149463.

It is an arithmetic number, because the mean of its divisors is an integer number (1681020).

Almost surely, 2^11953880 is an apocalyptic number.

11953880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11953880 is an abundant number, since it is smaller than the sum of its proper divisors (14942440).

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

11953880 is a wasteful number, since it uses less digits than its factorization.

11953880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298858 (or 298854 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 11953880 is about 3457.4383580911. The cubic root of 11953880 is about 228.6491707278.

The spelling of 11953880 in words is "eleven million, nine hundred fifty-three thousand, eight hundred eighty".