28339434 has 24 divisors (see below), whose sum is σ = 61731072. Its totient is φ = 9395880.

The previous prime is 28339429. The next prime is 28339453. The reversal of 28339434 is 43493382.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 11 ways as a sum of consecutive naturals, for example, 684 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (2572128).

Almost surely, 2^28339434 is an apocalyptic number.

28339434 is an abundant number, since it is smaller than the sum of its proper divisors (33391638).

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

28339434 is a wasteful number, since it uses less digits than its factorization.

28339434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8442 (or 8439 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 28339434 is about 5323.4795012285. The cubic root of 28339434 is about 304.8810214065.

The spelling of 28339434 in words is "twenty-eight million, three hundred thirty-nine thousand, four hundred thirty-four".