28277263872 has 360 divisors, whose sum is σ = 96433602408. Its totient is φ = 7907328000.

The previous prime is 28277263853. The next prime is 28277263879. The reversal of 28277263872 is 27836277282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277263879) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8564622 + ... + 8567922.

Almost surely, 2^28277263872 is an apocalyptic number.

28277263872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28277263872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48216801204).

28277263872 is an abundant number, since it is smaller than the sum of its proper divisors (68156338536).

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

28277263872 is a wasteful number, since it uses less digits than its factorization.

28277263872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3330 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The spelling of 28277263872 in words is "twenty-eight billion, two hundred seventy-seven million, two hundred sixty-three thousand, eight hundred seventy-two".