26890752256 has 81 divisors (see below), whose sum is σ = 55366261839. Its totient is φ = 13034760192.

The previous prime is 26890752253. The next prime is 26890752257. The reversal of 26890752256 is 65225709862.

The square root of 26890752256 is 163984.

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

It can be written as a sum of positive squares in 4 ways, for example, as 256512256 + 26634240000 = 16016^2 + 163200^2 .

It is a super-2 number, since 2×26890752256² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26890752253) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 97078390 + ... + 97078666.

Almost surely, 2^26890752256 is an apocalyptic number.

26890752256 is the 163984-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26890752256

26890752256 is an abundant number, since it is smaller than the sum of its proper divisors (28475509583).

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

26890752256 is an frugal number, since it uses more digits than its factorization.

26890752256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 26890752256 in words is "twenty-six billion, eight hundred ninety million, seven hundred fifty-two thousand, two hundred fifty-six".