1239226572 has 12 divisors (see below), whose sum is σ = 2891528696. Its totient is φ = 413075520.

The previous prime is 1239226537. The next prime is 1239226601. The reversal of 1239226572 is 2756229321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1239226572.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51634429 + ... + 51634452.

Almost surely, 2^1239226572 is an apocalyptic number.

1239226572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1239226572 is an abundant number, since it is smaller than the sum of its proper divisors (1652302124).

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

1239226572 is a wasteful number, since it uses less digits than its factorization.

1239226572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103268888 (or 103268886 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 1239226572 is about 35202.6500706978. The cubic root of 1239226572 is about 1074.1136583036.

The spelling of 1239226572 in words is "one billion, two hundred thirty-nine million, two hundred twenty-six thousand, five hundred seventy-two".