15728658450 has 48 divisors (see below), whose sum is σ = 39054434880. Its totient is φ = 4189216320.

The previous prime is 15728658437. The next prime is 15728658461. The reversal of 15728658450 is 5485682751.

It is a junction number, because it is equal to n+sod(n) for n = 15728658393 and 15728658402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61107 + ... + 187593.

It is an arithmetic number, because the mean of its divisors is an integer number (813634060).

Almost surely, 2^15728658450 is an apocalyptic number.

15728658450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15728658450 is an abundant number, since it is smaller than the sum of its proper divisors (23325776430).

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

15728658450 is a wasteful number, since it uses less digits than its factorization.

15728658450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127331 (or 127326 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 51.

The spelling of 15728658450 in words is "fifteen billion, seven hundred twenty-eight million, six hundred fifty-eight thousand, four hundred fifty".