12477972 has 24 divisors (see below), whose sum is σ = 31355296. Its totient is φ = 3839328.

The previous prime is 12477961. The next prime is 12477973. The reversal of 12477972 is 27977421.

12477972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 12477972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477973) 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, 39838 + ... + 40149.

Almost surely, 2^12477972 is an apocalyptic number.

12477972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12477972 is an abundant number, since it is smaller than the sum of its proper divisors (18877324).

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

12477972 is a wasteful number, since it uses less digits than its factorization.

12477972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80007 (or 80005 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

The square root of 12477972 is about 3532.4173026414. The cubic root of 12477972 is about 231.9430349637.

The spelling of 12477972 in words is "twelve million, four hundred seventy-seven thousand, nine hundred seventy-two".