28023465680 has 40 divisors (see below), whose sum is σ = 74462353152. Its totient is φ = 9608045184.

The previous prime is 28023465677. The next prime is 28023465707. The reversal of 28023465680 is 8656432082.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25020392 + ... + 25021511.

Almost surely, 2^28023465680 is an apocalyptic number.

28023465680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28023465680 is an abundant number, since it is smaller than the sum of its proper divisors (46438887472).

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

28023465680 is a wasteful number, since it uses less digits than its factorization.

28023465680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50041923 (or 50041917 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 28023465680 in words is "twenty-eight billion, twenty-three million, four hundred sixty-five thousand, six hundred eighty".