15788230920 has 384 divisors, whose sum is σ = 64583101440. Its totient is φ = 3249400320.

The previous prime is 15788230907. The next prime is 15788230921. The reversal of 15788230920 is 2903288751.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (15788230921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2963379 + ... + 2968701.

It is an arithmetic number, because the mean of its divisors is an integer number (168185160).

Almost surely, 2^15788230920 is an apocalyptic number.

15788230920 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 15788230920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32291550720).

15788230920 is an abundant number, since it is smaller than the sum of its proper divisors (48794870520).

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

15788230920 is a wasteful number, since it uses less digits than its factorization.

15788230920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 15788230920 in words is "fifteen billion, seven hundred eighty-eight million, two hundred thirty thousand, nine hundred twenty".