28619282880 has 140 divisors (see below), whose sum is σ = 101803916280. Its totient is φ = 7631801856.

The previous prime is 28619282873. The next prime is 28619282897. The reversal of 28619282880 is 8828291682.

It is a happy number.

28619282880 is a `hidden beast` number, since 286 + 1 + 9 + 282 + 8 + 80 = 666.

It is a super-2 number, since 2×28619282880² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 526150 + ... + 577989.

Almost surely, 2^28619282880 is an apocalyptic number.

28619282880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28619282880 is an abundant number, since it is smaller than the sum of its proper divisors (73184633400).

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

28619282880 is a wasteful number, since it uses less digits than its factorization.

28619282880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104168 (or 1104149 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The spelling of 28619282880 in words is "twenty-eight billion, six hundred nineteen million, two hundred eighty-two thousand, eight hundred eighty".