11778372 has 30 divisors (see below), whose sum is σ = 30791838. Its totient is φ = 3926016.

The previous prime is 11778367. The next prime is 11778391. The reversal of 11778372 is 27387711.

It is a happy number.

11778372 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 can be written as a sum of positive squares in only one way, i.e., 9036036 + 2742336 = 3006^2 + 1656^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17853 + ... + 18500.

Almost surely, 2^11778372 is an apocalyptic number.

11778372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11778372 is an abundant number, since it is smaller than the sum of its proper divisors (19013466).

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

11778372 is a wasteful number, since it uses less digits than its factorization.

11778372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36369 (or 36358 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 11778372 is about 3431.9632865169. The cubic root of 11778372 is about 227.5246328438.

It can be divided in two parts, 117783 and 72, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 11778372 in words is "eleven million, seven hundred seventy-eight thousand, three hundred seventy-two".