28865805476 has 12 divisors (see below), whose sum is σ = 51747236940. Its totient is φ = 14080880640.

The previous prime is 28865805473. The next prime is 28865805509. The reversal of 28865805476 is 67450856882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14417765476 + 14448040000 = 120074^2 + 120200^2 .

It is not an unprimeable number, because it can be changed into a prime (28865805473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88005341 + ... + 88005668.

It is an arithmetic number, because the mean of its divisors is an integer number (4312269745).

Almost surely, 2^28865805476 is an apocalyptic number.

It is an amenable number.

28865805476 is a deficient number, since it is larger than the sum of its proper divisors (22881431464).

28865805476 is a wasteful number, since it uses less digits than its factorization.

28865805476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176011054 (or 176011052 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 28865805476 in words is "twenty-eight billion, eight hundred sixty-five million, eight hundred five thousand, four hundred seventy-six".