11904780 has 24 divisors (see below), whose sum is σ = 33333552. Its totient is φ = 3174592.

The previous prime is 11904751. The next prime is 11904833. The reversal of 11904780 is 8740911.

11904780 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 Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99147 + ... + 99266.

It is an arithmetic number, because the mean of its divisors is an integer number (1388898).

Almost surely, 2^11904780 is an apocalyptic number.

11904780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11904780 is an abundant number, since it is smaller than the sum of its proper divisors (21428772).

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

11904780 is a wasteful number, since it uses less digits than its factorization.

11904780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198425 (or 198423 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 11904780 is about 3450.3304189599. The cubic root of 11904780 is about 228.3356858881.

The spelling of 11904780 in words is "eleven million, nine hundred four thousand, seven hundred eighty".