11949920 has 24 divisors (see below), whose sum is σ = 28232064. Its totient is φ = 4779904.

The previous prime is 11949913. The next prime is 11949923. The reversal of 11949920 is 2994911.

11949920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11949923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37184 + ... + 37503.

It is an arithmetic number, because the mean of its divisors is an integer number (1176336).

Almost surely, 2^11949920 is an apocalyptic number.

11949920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11949920 is an abundant number, since it is smaller than the sum of its proper divisors (16282144).

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

11949920 is an equidigital number, since it uses as much as digits as its factorization.

11949920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74702 (or 74694 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 11949920 is about 3456.8656323323. The cubic root of 11949920 is about 228.6239194923.

The spelling of 11949920 in words is "eleven million, nine hundred forty-nine thousand, nine hundred twenty".