28864352721744 has 30 divisors (see below), whose sum is σ = 80780098242506. Its totient is φ = 9621450907200.

The previous prime is 28864352721727. The next prime is 28864352721749. The reversal of 28864352721744 is 44712725346882.

28864352721744 is a `hidden beast` number, since 2 + 8 + 8 + 6 + 43 + 527 + 21 + 7 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26862659726400 + 2001692995344 = 5182920^2 + 1414812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28864352721749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100223446807 + ... + 100223447094.

Almost surely, 2^{28864352721744} is an apocalyptic number.

28864352721744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28864352721744 is an abundant number, since it is smaller than the sum of its proper divisors (51915745520762).

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

28864352721744 is a wasteful number, since it uses less digits than its factorization.

28864352721744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200446893915 (or 200446893906 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 63.

The spelling of 28864352721744 in words is "twenty-eight trillion, eight hundred sixty-four billion, three hundred fifty-two million, seven hundred twenty-one thousand, seven hundred forty-four".