28285440570 has 56 divisors (see below), whose sum is σ = 76335788916. Its totient is φ = 7542782208.

The previous prime is 28285440569. The next prime is 28285440583. The reversal of 28285440570 is 7504458282.

28285440570 is a `hidden beast` number, since 2 + 8 + 28 + 54 + 4 + 0 + 570 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26235252729 + 2050187841 = 161973^2 + 45279^2 .

It is a super-2 number, since 2×28285440570² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1932727 + ... + 1947306.

Almost surely, 2^28285440570 is an apocalyptic number.

28285440570 is an abundant number, since it is smaller than the sum of its proper divisors (48050348346).

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

28285440570 is an equidigital number, since it uses as much as digits as its factorization.

28285440570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880058 (or 3880043 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 45.

The spelling of 28285440570 in words is "twenty-eight billion, two hundred eighty-five million, four hundred forty thousand, five hundred seventy".