28297295264 has 48 divisors (see below), whose sum is σ = 65023596288. Its totient is φ = 11869377792.

The previous prime is 28297295263. The next prime is 28297295281. The reversal of 28297295264 is 46259279282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (28297295263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333379 + ... + 1354434.

It is an arithmetic number, because the mean of its divisors is an integer number (1354658256).

Almost surely, 2^28297295264 is an apocalyptic number.

It is an amenable number.

28297295264 is an abundant number, since it is smaller than the sum of its proper divisors (36726301024).

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

28297295264 is a wasteful number, since it uses less digits than its factorization.

28297295264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687877 (or 2687869 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 28297295264 in words is "twenty-eight billion, two hundred ninety-seven million, two hundred ninety-five thousand, two hundred sixty-four".