28939382 has 16 divisors (see below), whose sum is σ = 46068480. Its totient is φ = 13604712.

The previous prime is 28939381. The next prime is 28939403. The reversal of 28939382 is 28393982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28939381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2618 + ... + 8045.

It is an arithmetic number, because the mean of its divisors is an integer number (2879280).

Almost surely, 2^28939382 is an apocalyptic number.

28939382 is a deficient number, since it is larger than the sum of its proper divisors (17129098).

28939382 is a wasteful number, since it uses less digits than its factorization.

28939382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10747.

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

The square root of 28939382 is about 5379.5336229082. The cubic root of 28939382 is about 307.0174669192.

The spelling of 28939382 in words is "twenty-eight million, nine hundred thirty-nine thousand, three hundred eighty-two".