28959215564 has 12 divisors (see below), whose sum is σ = 52313421888. Its totient is φ = 14012523600.

The previous prime is 28959215563. The next prime is 28959215609. The reversal of 28959215564 is 46551295982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28959215563) 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, 116770907 + ... + 116771154.

It is an arithmetic number, because the mean of its divisors is an integer number (4359451824).

Almost surely, 2^28959215564 is an apocalyptic number.

It is an amenable number.

28959215564 is a deficient number, since it is larger than the sum of its proper divisors (23354206324).

28959215564 is a wasteful number, since it uses less digits than its factorization.

28959215564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233542096 (or 233542094 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 56.

The spelling of 28959215564 in words is "twenty-eight billion, nine hundred fifty-nine million, two hundred fifteen thousand, five hundred sixty-four".