28345420264 has 16 divisors (see below), whose sum is σ = 60740186400. Its totient is φ = 12148037232.

The previous prime is 28345420261. The next prime is 28345420267. The reversal of 28345420264 is 46202454382.

It is an interprime number because it is at equal distance from previous prime (28345420261) and next prime (28345420267).

It is not an unprimeable number, because it can be changed into a prime (28345420261) 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, 253084054 + ... + 253084165.

It is an arithmetic number, because the mean of its divisors is an integer number (3796261650).

Almost surely, 2^28345420264 is an apocalyptic number.

It is an amenable number.

28345420264 is an abundant number, since it is smaller than the sum of its proper divisors (32394766136).

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

28345420264 is a wasteful number, since it uses less digits than its factorization.

28345420264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506168232 (or 506168228 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

The spelling of 28345420264 in words is "twenty-eight billion, three hundred forty-five million, four hundred twenty thousand, two hundred sixty-four".