28562042880 has 832 divisors, whose sum is σ = 119271444480. Its totient is φ = 6348865536.

The previous prime is 28562042867. The next prime is 28562042893. The reversal of 28562042880 is 8824026582.

28562042880 is a `hidden beast` number, since 2 + 8 + 562 + 0 + 4 + 2 + 8 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (28562042867) and next prime (28562042893).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 181923762 + ... + 181923918.

Almost surely, 2^28562042880 is an apocalyptic number.

28562042880 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 28562042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59635722240).

28562042880 is an abundant number, since it is smaller than the sum of its proper divisors (90709401600).

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

28562042880 is a wasteful number, since it uses less digits than its factorization.

28562042880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 28562042880 in words is "twenty-eight billion, five hundred sixty-two million, forty-two thousand, eight hundred eighty".