28817099536 has 75 divisors (see below), whose sum is σ = 59294861043. Its totient is φ = 13566899520.

The previous prime is 28817099501. The next prime is 28817099537. The reversal of 28817099536 is 63599071882.

The square root of 28817099536 is 169756.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 17967793936 + 10849305600 = 134044^2 + 104160^2 .

It is not an unprimeable number, because it can be changed into a prime (28817099537) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 778840510 + ... + 778840546.

Almost surely, 2^28817099536 is an apocalyptic number.

28817099536 is the 169756-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28817099536

28817099536 is an abundant number, since it is smaller than the sum of its proper divisors (30477761507).

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

28817099536 is an frugal number, since it uses more digits than its factorization.

28817099536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 28817099536 in words is "twenty-eight billion, eight hundred seventeen million, ninety-nine thousand, five hundred thirty-six".