215193514928 has 320 divisors, whose sum is σ = 534137241600. Its totient is φ = 81993461760.

The previous prime is 215193514927. The next prime is 215193514951. The reversal of 215193514928 is 829415391512.

It is not an unprimeable number, because it can be changed into a prime (215193514927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175095818 + ... + 175097046.

It is an arithmetic number, because the mean of its divisors is an integer number (1669178880).

Almost surely, 2^215193514928 is an apocalyptic number.

215193514928 is a gapful number since it is divisible by the number (28) 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 215193514928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267068620800).

215193514928 is an abundant number, since it is smaller than the sum of its proper divisors (318943726672).

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

215193514928 is a wasteful number, since it uses less digits than its factorization.

215193514928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The spelling of 215193514928 in words is "two hundred fifteen billion, one hundred ninety-three million, five hundred fourteen thousand, nine hundred twenty-eight".