722153412 has 18 divisors (see below), whose sum is σ = 1825443438. Its totient is φ = 240717792.

The previous prime is 722153359. The next prime is 722153417. The reversal of 722153412 is 214351227.

722153412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 547279236 + 174874176 = 23394^2 + 13224^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (722153417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10029873 + ... + 10029944.

Almost surely, 2^722153412 is an apocalyptic number.

It is an amenable number.

722153412 is an abundant number, since it is smaller than the sum of its proper divisors (1103290026).

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

722153412 is a wasteful number, since it uses less digits than its factorization.

722153412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20059827 (or 20059822 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 722153412 is about 26872.9122351858. The cubic root of 722153412 is about 897.1736072591.

The spelling of 722153412 in words is "seven hundred twenty-two million, one hundred fifty-three thousand, four hundred twelve".