12744390428 has 48 divisors (see below), whose sum is σ = 27815424000. Its totient is φ = 4963654080.

The previous prime is 12744390427. The next prime is 12744390469. The reversal of 12744390428 is 82409344721.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12744390427) 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, 1275998 + ... + 1285946.

It is an arithmetic number, because the mean of its divisors is an integer number (579488000).

Almost surely, 2^12744390428 is an apocalyptic number.

It is an amenable number.

12744390428 is an abundant number, since it is smaller than the sum of its proper divisors (15071033572).

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

12744390428 is a wasteful number, since it uses less digits than its factorization.

12744390428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14130 (or 14128 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 12744390428 in words is "twelve billion, seven hundred forty-four million, three hundred ninety thousand, four hundred twenty-eight".