1368737728 has 112 divisors (see below), whose sum is σ = 3041660160. Its totient is φ = 607760384.

The previous prime is 1368737719. The next prime is 1368737753. The reversal of 1368737728 is 8277378631.

Its product of digits (2370816) is a multiple of the sum of its prime divisors (784).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076663 + ... + 2077321.

It is an arithmetic number, because the mean of its divisors is an integer number (27157680).

Almost surely, 2^1368737728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1368737728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520830080).

1368737728 is an abundant number, since it is smaller than the sum of its proper divisors (1672922432).

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

1368737728 is a wasteful number, since it uses less digits than its factorization.

1368737728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 784 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 52.

The square root of 1368737728 is about 36996.4556140179. The cubic root of 1368737728 is about 1110.2993343618.

It can be divided in two parts, 13687 and 37728, that added together give a palindrome (51415).

The spelling of 1368737728 in words is "one billion, three hundred sixty-eight million, seven hundred thirty-seven thousand, seven hundred twenty-eight".