28340156264 has 24 divisors (see below), whose sum is σ = 61813351890. Its totient is φ = 12145781088.

The previous prime is 28340156231. The next prime is 28340156267. The reversal of 28340156264 is 46265104382.

It can be written as a sum of positive squares in only one way, i.e., 18727922500 + 9612233764 = 136850^2 + 98042^2 .

It is not an unprimeable number, because it can be changed into a prime (28340156267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36147767 + ... + 36148550.

Almost surely, 2^28340156264 is an apocalyptic number.

It is an amenable number.

28340156264 is an abundant number, since it is smaller than the sum of its proper divisors (33473195626).

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

28340156264 is a wasteful number, since it uses less digits than its factorization.

28340156264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72296337 (or 72296326 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 28340156264 in words is "twenty-eight billion, three hundred forty million, one hundred fifty-six thousand, two hundred sixty-four".