28005505416 has 48 divisors (see below), whose sum is σ = 86683708800. Its totient is φ = 8001572832.

The previous prime is 28005505351. The next prime is 28005505427. The reversal of 28005505416 is 61450550082.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 27782736 + ... + 27783743.

It is an arithmetic number, because the mean of its divisors is an integer number (1805910600).

Almost surely, 2^28005505416 is an apocalyptic number.

It is an amenable number.

28005505416 is an abundant number, since it is smaller than the sum of its proper divisors (58678203384).

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

28005505416 is a wasteful number, since it uses less digits than its factorization.

28005505416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55566498 (or 55566491 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 28005505416 in words is "twenty-eight billion, five million, five hundred five thousand, four hundred sixteen".