28278278255000 has 40 divisors (see below), whose sum is σ = 66256005963180. Its totient is φ = 11311311300000.

The previous prime is 28278278254997. The next prime is 28278278255023. The reversal of 28278278255000 is 55287287282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×28278278255000² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2827822826 + ... + 2827832825.

Almost surely, 2^{28278278255000} is an apocalyptic number.

28278278255000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28278278255000 is an abundant number, since it is smaller than the sum of its proper divisors (37977727708180).

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

28278278255000 is an equidigital number, since it uses as much as digits as its factorization.

28278278255000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655655677 (or 5655655658 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 56.

The spelling of 28278278255000 in words is "twenty-eight trillion, two hundred seventy-eight billion, two hundred seventy-eight million, two hundred fifty-five thousand".