15223228572 has 12 divisors (see below), whose sum is σ = 35520866696. Its totient is φ = 5074409520.

The previous prime is 15223228571. The next prime is 15223228591. The reversal of 15223228572 is 27582232251.

It is a happy number.

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 15223228572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15223228571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634301179 + ... + 634301202.

Almost surely, 2^15223228572 is an apocalyptic number.

15223228572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15223228572 is an abundant number, since it is smaller than the sum of its proper divisors (20297638124).

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

15223228572 is a wasteful number, since it uses less digits than its factorization.

15223228572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268602388 (or 1268602386 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The spelling of 15223228572 in words is "fifteen billion, two hundred twenty-three million, two hundred twenty-eight thousand, five hundred seventy-two".