15728993280 has 1584 divisors, whose sum is σ = 76108311552. Its totient is φ = 2919628800.

The previous prime is 15728993243. The next prime is 15728993321. The reversal of 15728993280 is 8239982751.

It is a tau number, because it is divible by the number of its divisors (1584).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 507386865 + ... + 507386895.

Almost surely, 2^15728993280 is an apocalyptic number.

15728993280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15728993280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38054155776).

15728993280 is an abundant number, since it is smaller than the sum of its proper divisors (60379318272).

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

15728993280 is a wasteful number, since it uses less digits than its factorization.

15728993280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 15728993280 in words is "fifteen billion, seven hundred twenty-eight million, nine hundred ninety-three thousand, two hundred eighty".