11800880 has 80 divisors (see below), whose sum is σ = 33789504. Its totient is φ = 3732480.

The previous prime is 11800871. The next prime is 11800889. The reversal of 11800880 is 8800811.

It is an interprime number because it is at equal distance from previous prime (11800871) and next prime (11800889).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (11800889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6470 + ... + 8090.

Almost surely, 2^11800880 is an apocalyptic number.

11800880 is a gapful number since it is divisible by the number (10) 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 11800880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16894752).

11800880 is an abundant number, since it is smaller than the sum of its proper divisors (21988624).

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

11800880 is a wasteful number, since it uses less digits than its factorization.

11800880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 11800880 is about 3435.2408940277. The cubic root of 11800880 is about 227.6694707950.

The spelling of 11800880 in words is "eleven million, eight hundred thousand, eight hundred eighty".