28562814720 has 648 divisors, whose sum is σ = 112298798976. Its totient is φ = 6690816000.

The previous prime is 28562814701. The next prime is 28562814727. The reversal of 28562814720 is 2741826582.

28562814720 is a `hidden beast` number, since 2 + 8 + 5 + 628 + 14 + 7 + 2 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28562814727) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 43211190 + ... + 43211850.

Almost surely, 2^28562814720 is an apocalyptic number.

28562814720 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 28562814720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56149399488).

28562814720 is an abundant number, since it is smaller than the sum of its proper divisors (83735984256).

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

28562814720 is a wasteful number, since it uses less digits than its factorization.

28562814720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28562814720 in words is "twenty-eight billion, five hundred sixty-two million, eight hundred fourteen thousand, seven hundred twenty".