28270944000 has 720 divisors, whose sum is σ = 113432679360. Its totient is φ = 6950707200.

The previous prime is 28270943977. The next prime is 28270944049. The reversal of 28270944000 is 44907282.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×28270944000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 33695581 + ... + 33696419.

It is an arithmetic number, because the mean of its divisors is an integer number (157545388).

Almost surely, 2^28270944000 is an apocalyptic number.

28270944000 is a gapful number since it is divisible by the number (20) 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 28270944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56716339680).

28270944000 is an abundant number, since it is smaller than the sum of its proper divisors (85161735360).

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

28270944000 is an equidigital number, since it uses as much as digits as its factorization.

28270944000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 28270944000 in words is "twenty-eight billion, two hundred seventy million, nine hundred forty-four thousand".