11838972 has 12 divisors (see below), whose sum is σ = 27624296. Its totient is φ = 3946320.

The previous prime is 11838943. The next prime is 11838977. The reversal of 11838972 is 27983811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×11838972² = 280322516033568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11838972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11838977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493279 + ... + 493302.

Almost surely, 2^11838972 is an apocalyptic number.

11838972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11838972 is an abundant number, since it is smaller than the sum of its proper divisors (15785324).

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

11838972 is a wasteful number, since it uses less digits than its factorization.

11838972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986588 (or 986586 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 11838972 is about 3440.7807253587. The cubic root of 11838972 is about 227.9141720657.

The spelling of 11838972 in words is "eleven million, eight hundred thirty-eight thousand, nine hundred seventy-two".