11899872 has 60 divisors (see below), whose sum is σ = 35004816. Its totient is φ = 3965760.

The previous prime is 11899861. The next prime is 11899879. The reversal of 11899872 is 27899811.

11899872 is digitally balanced in base 2 and base 4, because in such bases 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 (11899879) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 297 + ... + 4887.

Almost surely, 2^11899872 is an apocalyptic number.

11899872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11899872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17502408).

11899872 is an abundant number, since it is smaller than the sum of its proper divisors (23104944).

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

11899872 is an equidigital number, since it uses as much as digits as its factorization.

11899872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613 (or 4596 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 11899872 is about 3449.6191094090. The cubic root of 11899872 is about 228.3043028193.

The spelling of 11899872 in words is "eleven million, eight hundred ninety-nine thousand, eight hundred seventy-two".