28782345354588 has 72 divisors (see below), whose sum is σ = 84150792905088. Its totient is φ = 8124448596768.

The previous prime is 28782345354559. The next prime is 28782345354589. The reversal of 28782345354588 is 88545354328782.

28782345354588 is a `hidden beast` number, since 2 + 8 + 7 + 8 + 2 + 3 + 4 + 5 + 35 + 4 + 588 = 666.

It is a super-2 number, since 2×28782345354588² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28782345354589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688025206 + ... + 688067037.

Almost surely, 2^{28782345354588} is an apocalyptic number.

28782345354588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28782345354588 is an abundant number, since it is smaller than the sum of its proper divisors (55368447550500).

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

28782345354588 is a wasteful number, since it uses less digits than its factorization.

28782345354588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376092343 (or 1376092338 counting only the distinct ones).

The product of its digits is 2064384000, while the sum is 72.

The spelling of 28782345354588 in words is "twenty-eight trillion, seven hundred eighty-two billion, three hundred forty-five million, three hundred fifty-four thousand, five hundred eighty-eight".