28219754160 has 160 divisors (see below), whose sum is σ = 104678508480. Its totient is φ = 6946394112.

The previous prime is 28219754141. The next prime is 28219754261. The reversal of 28219754160 is 6145791282.

28219754160 is a `hidden beast` number, since 28 + 21 + 9 + 7 + 541 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 474409 + ... + 530568.

It is an arithmetic number, because the mean of its divisors is an integer number (654240678).

Almost surely, 2^28219754160 is an apocalyptic number.

28219754160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28219754160 is an abundant number, since it is smaller than the sum of its proper divisors (76458754320).

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

28219754160 is a wasteful number, since it uses less digits than its factorization.

28219754160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005012 (or 1005000 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 28219754160 in words is "twenty-eight billion, two hundred nineteen million, seven hundred fifty-four thousand, one hundred sixty".