28540608320 has 112 divisors (see below), whose sum is σ = 81759308160. Its totient is φ = 9270319104.

The previous prime is 28540608293. The next prime is 28540608337. The reversal of 28540608320 is 2380604582.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292739 + ... + 377858.

Almost surely, 2^28540608320 is an apocalyptic number.

28540608320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28540608320 is an abundant number, since it is smaller than the sum of its proper divisors (53218699840).

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

28540608320 is a wasteful number, since it uses less digits than its factorization.

28540608320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670640 (or 670630 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 28540608320 in words is "twenty-eight billion, five hundred forty million, six hundred eight thousand, three hundred twenty".