28961946220752 has 30 divisors (see below), whose sum is σ = 81053224493202. Its totient is φ = 9653982073536.

The previous prime is 28961946220709. The next prime is 28961946220769. The reversal of 28961946220752 is 25702264916982.

28961946220752 is a `hidden beast` number, since 2 + 8 + 9 + 619 + 4 + 6 + 2 + 2 + 0 + 7 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15212059269696 + 13749886951056 = 3900264^2 + 3708084^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28961946220752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100562313123 + ... + 100562313410.

Almost surely, 2^{28961946220752} is an apocalyptic number.

It is an amenable number.

28961946220752 is an abundant number, since it is smaller than the sum of its proper divisors (52091278272450).

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

28961946220752 is a wasteful number, since it uses less digits than its factorization.

28961946220752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201124626547 (or 201124626538 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 28961946220752 in words is "twenty-eight trillion, nine hundred sixty-one billion, nine hundred forty-six million, two hundred twenty thousand, seven hundred fifty-two".