28423164 has 96 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 6989760.

The previous prime is 28423151. The next prime is 28423181. The reversal of 28423164 is 46132482.

It is a congruent number.

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, 16747 + ... + 18365.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^28423164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28423164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43545600).

28423164 is an abundant number, since it is smaller than the sum of its proper divisors (58668036).

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

28423164 is a wasteful number, since it uses less digits than its factorization.

28423164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1661 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 28423164 is about 5331.3379183841. The cubic root of 28423164 is about 305.1809872686.

It can be divided in two parts, 2842 and 3164, that added together give a palindrome (6006).

The spelling of 28423164 in words is "twenty-eight million, four hundred twenty-three thousand, one hundred sixty-four".