28881024055 has 8 divisors (see below), whose sum is σ = 37323169632. Its totient is φ = 21327525408.

The previous prime is 28881024013. The next prime is 28881024083. The reversal of 28881024055 is 55042018882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28881024055 is a prime.

It is a super-2 number, since 2×28881024055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222161659 + ... + 222161788.

It is an arithmetic number, because the mean of its divisors is an integer number (4665396204).

Almost surely, 2^28881024055 is an apocalyptic number.

28881024055 is a deficient number, since it is larger than the sum of its proper divisors (8442145577).

28881024055 is a wasteful number, since it uses less digits than its factorization.

28881024055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444323465.

The product of its (nonzero) digits is 204800, while the sum is 43.

The spelling of 28881024055 in words is "twenty-eight billion, eight hundred eighty-one million, twenty-four thousand, fifty-five".