28162446 has 64 divisors (see below), whose sum is σ = 66017280. Its totient is φ = 7931520.

The previous prime is 28162429. The next prime is 28162457. The reversal of 28162446 is 64426182.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 45636 + ... + 46248.

It is an arithmetic number, because the mean of its divisors is an integer number (1031520).

Almost surely, 2^28162446 is an apocalyptic number.

28162446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28162446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33008640).

28162446 is an abundant number, since it is smaller than the sum of its proper divisors (37854834).

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

28162446 is a wasteful number, since it uses less digits than its factorization.

28162446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

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

The square root of 28162446 is about 5306.8301272982. The cubic root of 28162446 is about 304.2450053386.

The spelling of 28162446 in words is "twenty-eight million, one hundred sixty-two thousand, four hundred forty-six".