1373573256 has 128 divisors (see below), whose sum is σ = 3825930240. Its totient is φ = 407462400.

The previous prime is 1373573249. The next prime is 1373573297. The reversal of 1373573256 is 6523753731.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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 31 ways as a sum of consecutive naturals, for example, 5068401 + ... + 5068671.

It is an arithmetic number, because the mean of its divisors is an integer number (29890080).

Almost surely, 2^1373573256 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 1373573256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912965120).

1373573256 is an abundant number, since it is smaller than the sum of its proper divisors (2452356984).

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

1373573256 is a wasteful number, since it uses less digits than its factorization.

1373573256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 623 counting only the distinct ones).

The product of its digits is 396900, while the sum is 42.

The square root of 1373573256 is about 37061.7492301699. The cubic root of 1373573256 is about 1111.6053000277.

The spelling of 1373573256 in words is "one billion, three hundred seventy-three million, five hundred seventy-three thousand, two hundred fifty-six".