28018343616 has 224 divisors, whose sum is σ = 81325516800. Its totient is φ = 8480194560.

The previous prime is 28018343599. The next prime is 28018343623. The reversal of 28018343616 is 61634381082.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12325456 + ... + 12327728.

Almost surely, 2^28018343616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28018343616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40662758400).

28018343616 is an abundant number, since it is smaller than the sum of its proper divisors (53307173184).

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

28018343616 is a wasteful number, since it uses less digits than its factorization.

28018343616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 28018343616 in words is "twenty-eight billion, eighteen million, three hundred forty-three thousand, six hundred sixteen".