28426164 has 48 divisors (see below), whose sum is σ = 72968448. Its totient is φ = 8558208.

The previous prime is 28426129. The next prime is 28426171. The reversal of 28426164 is 46162482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5394 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (1520176).

Almost surely, 2^28426164 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 28426164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36484224).

28426164 is an abundant number, since it is smaller than the sum of its proper divisors (44542284).

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

28426164 is a wasteful number, since it uses less digits than its factorization.

28426164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944 (or 3942 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 28426164 is about 5331.6192662267. The cubic root of 28426164 is about 305.1917239427.

The spelling of 28426164 in words is "twenty-eight million, four hundred twenty-six thousand, one hundred sixty-four".