1356889344 has 72 divisors (see below), whose sum is σ = 3727863552. Its totient is φ = 437698560.

The previous prime is 1356889333. The next prime is 1356889361. The reversal of 1356889344 is 4439886531.

It is a super-2 number, since 2×1356889344² = 3682297383721500672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4689 + ... + 52304.

Almost surely, 2^1356889344 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 1356889344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863931776).

1356889344 is an abundant number, since it is smaller than the sum of its proper divisors (2370974208).

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

1356889344 is an equidigital number, since it uses as much as digits as its factorization.

1356889344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57043 (or 57029 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 1356889344 is about 36835.9789336458. The cubic root of 1356889344 is about 1107.0863020450.

The spelling of 1356889344 in words is "one billion, three hundred fifty-six million, eight hundred eighty-nine thousand, three hundred forty-four".