1356722972 has 12 divisors (see below), whose sum is σ = 2590107576. Its totient is φ = 616692240.

The previous prime is 1356722963. The next prime is 1356722989. The reversal of 1356722972 is 2792276531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 30834613 = 1356722972 / (1 + 3 + 5 + 6 + 7 + 2 + 2 + 9 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15417263 + ... + 15417350.

It is an arithmetic number, because the mean of its divisors is an integer number (215842298).

Almost surely, 2^1356722972 is an apocalyptic number.

It is an amenable number.

1356722972 is a deficient number, since it is larger than the sum of its proper divisors (1233384604).

1356722972 is a wasteful number, since it uses less digits than its factorization.

1356722972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30834628 (or 30834626 counting only the distinct ones).

The product of its digits is 317520, while the sum is 44.

The square root of 1356722972 is about 36833.7205831830. The cubic root of 1356722972 is about 1107.0410525456.

The spelling of 1356722972 in words is "one billion, three hundred fifty-six million, seven hundred twenty-two thousand, nine hundred seventy-two".