11381972 has 12 divisors (see below), whose sum is σ = 22764000. Its totient is φ = 4877976.

The previous prime is 11381963. The next prime is 11381983. The reversal of 11381972 is 27918311.

11381972 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203222 + ... + 203277.

It is an arithmetic number, because the mean of its divisors is an integer number (1897000).

Almost surely, 2^11381972 is an apocalyptic number.

It is an amenable number.

11381972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11381972 is a wasteful number, since it uses less digits than its factorization.

11381972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406510 (or 406508 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 11381972 is about 3373.7178305247. The cubic root of 11381972 is about 224.9430110812.

The spelling of 11381972 in words is "eleven million, three hundred eighty-one thousand, nine hundred seventy-two".