28399382 has 16 divisors (see below), whose sum is σ = 46935504. Its totient is φ = 12780000.

The previous prime is 28399373. The next prime is 28399391.

28399382 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (28399373) and next prime (28399391).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4169 + ... + 8612.

It is an arithmetic number, because the mean of its divisors is an integer number (2933469).

Almost surely, 2^28399382 is an apocalyptic number.

28399382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28399382 is a deficient number, since it is larger than the sum of its proper divisors (18536122).

28399382 is a wasteful number, since it uses less digits than its factorization.

28399382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895.

The product of its digits is 186624, while the sum is 44.

The square root of 28399382 is about 5329.1070546575. The cubic root of 28399382 is about 305.0958473288.

It can be divided in two parts, 2839 and 9382, that added together give a palindrome (12221).

The spelling of 28399382 in words is "twenty-eight million, three hundred ninety-nine thousand, three hundred eighty-two".