11977888 has 24 divisors (see below), whose sum is σ = 25396308. Its totient is φ = 5528064.

The previous prime is 11977883. The next prime is 11977891. The reversal of 11977888 is 88877911.

It can be written as a sum of positive squares in 2 ways, for example, as 10837264 + 1140624 = 3292^2 + 1068^2 .

It is not an unprimeable number, because it can be changed into a prime (11977883) 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, 13981 + ... + 14812.

Almost surely, 2^11977888 is an apocalyptic number.

It is an amenable number.

11977888 is an abundant number, since it is smaller than the sum of its proper divisors (13418420).

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

11977888 is a wasteful number, since it uses less digits than its factorization.

11977888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28816 (or 28808 counting only the distinct ones).

The product of its digits is 225792, while the sum is 49.

The square root of 11977888 is about 3460.9085512333. The cubic root of 11977888 is about 228.8021402639.

The spelling of 11977888 in words is "eleven million, nine hundred seventy-seven thousand, eight hundred eighty-eight".