28418452578 has 24 divisors (see below), whose sum is σ = 63005253168. Its totient is φ = 9252519192.

The previous prime is 28418452547. The next prime is 28418452591. The reversal of 28418452578 is 87525481482.

28418452578 is a `hidden beast` number, since 2 + 8 + 4 + 18 + 4 + 52 + 578 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18357400 + ... + 18358947.

It is an arithmetic number, because the mean of its divisors is an integer number (2625218882).

Almost surely, 2^28418452578 is an apocalyptic number.

28418452578 is an abundant number, since it is smaller than the sum of its proper divisors (34586800590).

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

28418452578 is a wasteful number, since it uses less digits than its factorization.

28418452578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36716398 (or 36716395 counting only the distinct ones).

The product of its digits is 5734400, while the sum is 54.

The spelling of 28418452578 in words is "twenty-eight billion, four hundred eighteen million, four hundred fifty-two thousand, five hundred seventy-eight".