28280264000 has 56 divisors (see below), whose sum is σ = 70036093608. Its totient is φ = 11312102400.

The previous prime is 28280263981. The next prime is 28280264003. The reversal of 28280264000 is 46208282.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10549504 + 28269714496 = 3248^2 + 168136^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280264003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759517 + ... + 1775516.

Almost surely, 2^28280264000 is an apocalyptic number.

28280264000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28280264000 is an abundant number, since it is smaller than the sum of its proper divisors (41755829608).

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

28280264000 is an equidigital number, since it uses as much as digits as its factorization.

28280264000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535060 (or 3535040 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 28280264000 in words is "twenty-eight billion, two hundred eighty million, two hundred sixty-four thousand".