11781372 has 24 divisors (see below), whose sum is σ = 27570256. Its totient is φ = 3915648.

The previous prime is 11781361. The next prime is 11781377. The reversal of 11781372 is 27318711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11781377) 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, 3528 + ... + 6000.

Almost surely, 2^11781372 is an apocalyptic number.

11781372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11781372 is an abundant number, since it is smaller than the sum of its proper divisors (15788884).

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

11781372 is a wasteful number, since it uses less digits than its factorization.

11781372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its digits is 2352, while the sum is 30.

The square root of 11781372 is about 3432.4003263023. The cubic root of 11781372 is about 227.5439483585.

The spelling of 11781372 in words is "eleven million, seven hundred eighty-one thousand, three hundred seventy-two".