1356579872 has 54 divisors (see below), whose sum is σ = 2844538893. Its totient is φ = 636723712.

The previous prime is 1356579853. The next prime is 1356579881. The reversal of 1356579872 is 2789756531.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1241575696 + 115004176 = 35236^2 + 10724^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26044.

It is a Duffinian number.

Its product of digits (3175200) is a multiple of the sum of its prime factors (810).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3541793 + ... + 3542175.

Almost surely, 2^1356579872 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 1356579872

1356579872 is an abundant number, since it is smaller than the sum of its proper divisors (1487959021).

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

1356579872 is an frugal number, since it uses more digits than its factorization.

1356579872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 402 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 53.

The square root of 1356579872 is about 36831.7780184449. The cubic root of 1356579872 is about 1107.0021295555.

The spelling of 1356579872 in words is "one billion, three hundred fifty-six million, five hundred seventy-nine thousand, eight hundred seventy-two".