11847972 has 24 divisors (see below), whose sum is σ = 27729856. Its totient is φ = 3937248.

The previous prime is 11847961. The next prime is 11847977. The reversal of 11847972 is 27974811.

It is a super-3 number, since 3×11847972³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11847972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847977) 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, 3153 + ... + 5799.

Almost surely, 2^11847972 is an apocalyptic number.

11847972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11847972 is an abundant number, since it is smaller than the sum of its proper divisors (15881884).

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

11847972 is a wasteful number, since it uses less digits than its factorization.

11847972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027 (or 3025 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 11847972 is about 3442.0883196106. The cubic root of 11847972 is about 227.9719109749.

The spelling of 11847972 in words is "eleven million, eight hundred forty-seven thousand, nine hundred seventy-two".