28344168 has 160 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 8501760.

The previous prime is 28344157. The next prime is 28344187. The reversal of 28344168 is 86144382.

It is a super-2 number, since 2×28344168² = 1606783719224448, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 341455 + ... + 341537.

It is an arithmetic number, because the mean of its divisors is an integer number (548856).

Almost surely, 2^28344168 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 28344168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43908480).

28344168 is an abundant number, since it is smaller than the sum of its proper divisors (59472792).

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

28344168 is a wasteful number, since it uses less digits than its factorization.

28344168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 136 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 28344168 is about 5323.9241166643. The cubic root of 28344168 is about 304.8979968855.

The spelling of 28344168 in words is "twenty-eight million, three hundred forty-four thousand, one hundred sixty-eight".