26728894900 has 18 divisors (see below), whose sum is σ = 58001702150. Its totient is φ = 10691557920.

The previous prime is 26728894859. The next prime is 26728894967. The reversal of 26728894900 is 949882762.

It can be written as a sum of positive squares in 3 ways, for example, as 54819216 + 26674075684 = 7404^2 + 163322^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133644375 + ... + 133644574.

Almost surely, 2^26728894900 is an apocalyptic number.

26728894900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26728894900 is an abundant number, since it is smaller than the sum of its proper divisors (31272807250).

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

26728894900 is a wasteful number, since it uses less digits than its factorization.

26728894900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267288963 (or 267288956 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 26728894900 in words is "twenty-six billion, seven hundred twenty-eight million, eight hundred ninety-four thousand, nine hundred".