11780478 has 20 divisors (see below), whose sum is σ = 26397360. Its totient is φ = 3926772.

The previous prime is 11780453. The next prime is 11780479. The reversal of 11780478 is 87408711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780479) 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, 36198 + ... + 36521.

It is an arithmetic number, because the mean of its divisors is an integer number (1319868).

Almost surely, 2^11780478 is an apocalyptic number.

11780478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11780478 is an abundant number, since it is smaller than the sum of its proper divisors (14616882).

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

11780478 is an equidigital number, since it uses as much as digits as its factorization.

11780478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72733 (or 72724 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 11780478 is about 3432.2700942671. The cubic root of 11780478 is about 227.5381926781.

The spelling of 11780478 in words is "eleven million, seven hundred eighty thousand, four hundred seventy-eight".