28668500464 has 40 divisors (see below), whose sum is σ = 55805146992. Its totient is φ = 14267335680.

The previous prime is 28668500461. The next prime is 28668500467. The reversal of 28668500464 is 46400586682.

It is an interprime number because it is at equal distance from previous prime (28668500461) and next prime (28668500467).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668500461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3064434 + ... + 3073774.

Almost surely, 2^28668500464 is an apocalyptic number.

It is an amenable number.

28668500464 is a deficient number, since it is larger than the sum of its proper divisors (27136646528).

28668500464 is a wasteful number, since it uses less digits than its factorization.

28668500464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225 (or 10219 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 28668500464 in words is "twenty-eight billion, six hundred sixty-eight million, five hundred thousand, four hundred sixty-four".