28339164 has 72 divisors (see below), whose sum is σ = 82712448. Its totient is φ = 8013600.

The previous prime is 28339163. The next prime is 28339189. The reversal of 28339164 is 46193382.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28339163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26439 + ... + 27489.

It is an arithmetic number, because the mean of its divisors is an integer number (1148784).

Almost surely, 2^28339164 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 28339164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41356224).

28339164 is an abundant number, since it is smaller than the sum of its proper divisors (54373284).

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

28339164 is a wasteful number, since it uses less digits than its factorization.

28339164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1170 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 28339164 is about 5323.4541418143. The cubic root of 28339164 is about 304.8800531663.

The spelling of 28339164 in words is "twenty-eight million, three hundred thirty-nine thousand, one hundred sixty-four".