12398772 has 24 divisors (see below), whose sum is σ = 29022336. Its totient is φ = 4119808.

The previous prime is 12398759. The next prime is 12398777. The reversal of 12398772 is 27789321.

12398772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12398772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12398777) 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, 2773 + ... + 5699.

It is an arithmetic number, because the mean of its divisors is an integer number (1209264).

Almost surely, 2^12398772 is an apocalyptic number.

12398772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12398772 is an abundant number, since it is smaller than the sum of its proper divisors (16623564).

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

12398772 is a wasteful number, since it uses less digits than its factorization.

12398772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3285 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 12398772 is about 3521.1890037316. The cubic root of 12398772 is about 231.4512645677.

It can be divided in two parts, 1239 and 8772, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 12398772 in words is "twelve million, three hundred ninety-eight thousand, seven hundred seventy-two".