28107860881 has 8 divisors (see below), whose sum is σ = 29635032800. Its totient is φ = 26585470080.

The previous prime is 28107860873. The next prime is 28107860899. The reversal of 28107860881 is 18806870182.

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

It is a cyclic number.

It is not a de Polignac number, because 28107860881 - 2³ = 28107860873 is a prime.

It is a super-2 number, since 2×28107860881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28107860831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183200 + ... + 1206721.

It is an arithmetic number, because the mean of its divisors is an integer number (3704379100).

Almost surely, 2^28107860881 is an apocalyptic number.

It is an amenable number.

28107860881 is a deficient number, since it is larger than the sum of its proper divisors (1527171919).

28107860881 is a wasteful number, since it uses less digits than its factorization.

28107860881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390559.

The product of its (nonzero) digits is 344064, while the sum is 49.

The spelling of 28107860881 in words is "twenty-eight billion, one hundred seven million, eight hundred sixty thousand, eight hundred eighty-one".