28465088656 has 15 divisors (see below), whose sum is σ = 55152416851. Its totient is φ = 14232206896.

The previous prime is 28465088651. The next prime is 28465088657. The reversal of 28465088656 is 65688056482.

The square root of 28465088656 is 168716.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×28465088656² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28465088656.

It is not an unprimeable number, because it can be changed into a prime (28465088651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 653775 + ... + 695953.

Almost surely, 2^28465088656 is an apocalyptic number.

28465088656 is the 168716-th square number.

It is an amenable number.

28465088656 is a deficient number, since it is larger than the sum of its proper divisors (26687328195).

28465088656 is an frugal number, since it uses more digits than its factorization.

28465088656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84366 (or 42181 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 58.

The spelling of 28465088656 in words is "twenty-eight billion, four hundred sixty-five million, eighty-eight thousand, six hundred fifty-six".