12715444 has 48 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 5203296.

The previous prime is 12715441. The next prime is 12715447. The reversal of 12715444 is 44451721.

It is an interprime number because it is at equal distance from previous prime (12715441) and next prime (12715447).

It is a super-2 number, since 2×12715444² = 323365032234272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12715441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70947 + ... + 71125.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^12715444 is an apocalyptic number.

12715444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12715444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13305600).

12715444 is an abundant number, since it is smaller than the sum of its proper divisors (13895756).

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

12715444 is a wasteful number, since it uses less digits than its factorization.

12715444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 290 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 12715444 is about 3565.8721233381. The cubic root of 12715444 is about 233.4051905670.

The spelling of 12715444 in words is "twelve million, seven hundred fifteen thousand, four hundred forty-four".