15788028620 has 192 divisors, whose sum is σ = 42700089600. Its totient is φ = 4768727040.

The previous prime is 15788028617. The next prime is 15788028637. The reversal of 15788028620 is 2682088751.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4695740 + ... + 4699100.

It is an arithmetic number, because the mean of its divisors is an integer number (222396300).

Almost surely, 2^15788028620 is an apocalyptic number.

15788028620 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 15788028620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21350044800).

15788028620 is an abundant number, since it is smaller than the sum of its proper divisors (26912060980).

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

15788028620 is a wasteful number, since it uses less digits than its factorization.

15788028620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 15788028620 in words is "fifteen billion, seven hundred eighty-eight million, twenty-eight thousand, six hundred twenty".