28739206 has 8 divisors (see below), whose sum is σ = 43151400. Its totient is φ = 14355408.

The previous prime is 28739147. The next prime is 28739209. The reversal of 28739206 is 60293782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28739209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4356 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (5393925).

Almost surely, 2^28739206 is an apocalyptic number.

28739206 is a deficient number, since it is larger than the sum of its proper divisors (14412194).

28739206 is a wasteful number, since it uses less digits than its factorization.

28739206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 28739206 is about 5360.8960071988. The cubic root of 28739206 is about 306.3079403910.

It can be divided in two parts, 287 and 39206, that added together give a palindrome (39493).

The spelling of 28739206 in words is "twenty-eight million, seven hundred thirty-nine thousand, two hundred six".