15900172828 has 12 divisors (see below), whose sum is σ = 29462085072. Its totient is φ = 7482434240.

The previous prime is 15900172817. The next prime is 15900172829. The reversal of 15900172828 is 82827100951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15900172829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116912968 + ... + 116913103.

It is an arithmetic number, because the mean of its divisors is an integer number (2455173756).

Almost surely, 2^15900172828 is an apocalyptic number.

It is an amenable number.

15900172828 is a deficient number, since it is larger than the sum of its proper divisors (13561912244).

15900172828 is a wasteful number, since it uses less digits than its factorization.

15900172828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233826092 (or 233826090 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 15900172828 in words is "fifteen billion, nine hundred million, one hundred seventy-two thousand, eight hundred twenty-eight".