28339946 has 8 divisors (see below), whose sum is σ = 42532644. Its totient is φ = 14162400.

The previous prime is 28339937. The next prime is 28339951. The reversal of 28339946 is 64993382.

It can be written as a sum of positive squares in 2 ways, for example, as 28206721 + 133225 = 5311^2 + 365^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28339897 and 28339906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646 + ... + 8846.

Almost surely, 2^28339946 is an apocalyptic number.

28339946 is a deficient number, since it is larger than the sum of its proper divisors (14192698).

28339946 is a wasteful number, since it uses less digits than its factorization.

28339946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576.

The product of its digits is 279936, while the sum is 44.

The square root of 28339946 is about 5323.5275898599. The cubic root of 28339946 is about 304.8828574599.

The spelling of 28339946 in words is "twenty-eight million, three hundred thirty-nine thousand, nine hundred forty-six".