28258155804800 has 48 divisors (see below), whose sum is σ = 69806475519450. Its totient is φ = 11303262320640.

The previous prime is 28258155804797. The next prime is 28258155804821. The reversal of 28258155804800 is 840855185282.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18213160865344 + 10044994939456 = 4267688^2 + 3169384^2 .

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, 4415333645 + ... + 4415340044.

Almost surely, 2^{28258155804800} is an apocalyptic number.

28258155804800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28258155804800 is an abundant number, since it is smaller than the sum of its proper divisors (41548319714650).

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

28258155804800 is an equidigital number, since it uses as much as digits as its factorization.

28258155804800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830673713 (or 8830673696 counting only the distinct ones).

The product of its (nonzero) digits is 8192000, while the sum is 56.

The spelling of 28258155804800 in words is "twenty-eight trillion, two hundred fifty-eight billion, one hundred fifty-five million, eight hundred four thousand, eight hundred".