28246890528 has 36 divisors (see below), whose sum is σ = 80327095758. Its totient is φ = 9415630080.

The previous prime is 28246890523. The next prime is 28246890557. The reversal of 28246890528 is 82509864282.

It is a happy number.

28246890528 is a `hidden beast` number, since 2 + 8 + 24 + 6 + 8 + 90 + 528 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28187723664 + 59166864 = 167892^2 + 7692^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28246890528² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28246890523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49039453 + ... + 49040028.

Almost surely, 2^28246890528 is an apocalyptic number.

It is an amenable number.

28246890528 is an abundant number, since it is smaller than the sum of its proper divisors (52080205230).

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

28246890528 is a wasteful number, since it uses less digits than its factorization.

28246890528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98079497 (or 98079486 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 28246890528 in words is "twenty-eight billion, two hundred forty-six million, eight hundred ninety thousand, five hundred twenty-eight".