28476380881 has 16 divisors (see below), whose sum is σ = 30788311680. Its totient is φ = 26182016640.

The previous prime is 28476380879. The next prime is 28476380903. The reversal of 28476380881 is 18808367482.

It is not a de Polignac number, because 28476380881 - 2¹ = 28476380879 is a prime.

It is a super-2 number, since 2×28476380881² (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 (28476380381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3538260 + ... + 3546298.

It is an arithmetic number, because the mean of its divisors is an integer number (1924269480).

Almost surely, 2^28476380881 is an apocalyptic number.

It is an amenable number.

28476380881 is a deficient number, since it is larger than the sum of its proper divisors (2311930799).

28476380881 is a wasteful number, since it uses less digits than its factorization.

28476380881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 28476380881 in words is "twenty-eight billion, four hundred seventy-six million, three hundred eighty thousand, eight hundred eighty-one".