15238227816 has 256 divisors, whose sum is σ = 50289868800. Its totient is φ = 4183488000.

The previous prime is 15238227769. The next prime is 15238227841. The reversal of 15238227816 is 61872283251.

It is a super-2 number, since 2×15238227816² (a number of 21 digits) contains 22 as substring.

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, 7076596 + ... + 7078748.

It is an arithmetic number, because the mean of its divisors is an integer number (196444800).

Almost surely, 2^15238227816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15238227816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25144934400).

15238227816 is an abundant number, since it is smaller than the sum of its proper divisors (35051640984).

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

15238227816 is a wasteful number, since it uses less digits than its factorization.

15238227816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357 (or 2347 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 15238227816 in words is "fifteen billion, two hundred thirty-eight million, two hundred twenty-seven thousand, eight hundred sixteen".