12247992 has 24 divisors (see below), whose sum is σ = 33171840. Its totient is φ = 4082640.

The previous prime is 12247981. The next prime is 12248011. The reversal of 12247992 is 29974221.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84984 + ... + 85127.

It is an arithmetic number, because the mean of its divisors is an integer number (1382160).

Almost surely, 2^12247992 is an apocalyptic number.

12247992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12247992 is an abundant number, since it is smaller than the sum of its proper divisors (20923848).

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

12247992 is a wasteful number, since it uses less digits than its factorization.

12247992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170123 (or 170116 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 12247992 is about 3499.7131311009. The cubic root of 12247992 is about 230.5092183281.

It can be divided in two parts, 1224 and 7992, that added together give a square (9216 = 96²).

The spelling of 12247992 in words is "twelve million, two hundred forty-seven thousand, nine hundred ninety-two".