28888602885720 has 48 divisors (see below), whose sum is σ = 93887959379760. Its totient is φ = 7703627436096.

The previous prime is 28888602885707. The next prime is 28888602885757. The reversal of 28888602885720 is 2758820688882.

28888602885720 is a `hidden beast` number, since 2 + 8 + 8 + 8 + 8 + 602 + 8 + 8 + 5 + 7 + 2 + 0 = 666.

It is a super-2 number, since 2×28888602885720² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40123059204 + ... + 40123059923.

It is an arithmetic number, because the mean of its divisors is an integer number (1955999153745).

Almost surely, 2^{28888602885720} is an apocalyptic number.

28888602885720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28888602885720 is an abundant number, since it is smaller than the sum of its proper divisors (64999356494040).

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

28888602885720 is a wasteful number, since it uses less digits than its factorization.

28888602885720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80246119144 (or 80246119137 counting only the distinct ones).

The product of its (nonzero) digits is 440401920, while the sum is 72.

The spelling of 28888602885720 in words is "twenty-eight trillion, eight hundred eighty-eight billion, six hundred two million, eight hundred eighty-five thousand, seven hundred twenty".