11872780 has 24 divisors (see below), whose sum is σ = 25542720. Its totient is φ = 4632960.

The previous prime is 11872771. The next prime is 11872787. The reversal of 11872780 is 8727811.

It is not an unprimeable number, because it can be changed into a prime (11872787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6420 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (1064280).

Almost surely, 2^11872780 is an apocalyptic number.

11872780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11872780 is an abundant number, since it is smaller than the sum of its proper divisors (13669940).

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

11872780 is a wasteful number, since it uses less digits than its factorization.

11872780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14529 (or 14527 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 11872780 is about 3445.6900615116. The cubic root of 11872780 is about 228.1309138393.

It can be divided in two parts, 1 and 1872780, that added together give a palindrome (1872781).

The spelling of 11872780 in words is "eleven million, eight hundred seventy-two thousand, seven hundred eighty".