28339802 has 4 divisors (see below), whose sum is σ = 42509706. Its totient is φ = 14169900.

The previous prime is 28339781. The next prime is 28339813. The reversal of 28339802 is 20893382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25210441 + 3129361 = 5021^2 + 1769^2 .

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 as a sum of consecutive naturals, namely, 7084949 + ... + 7084952.

Almost surely, 2^28339802 is an apocalyptic number.

28339802 is a deficient number, since it is larger than the sum of its proper divisors (14169904).

28339802 is a wasteful number, since it uses less digits than its factorization.

28339802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14169903.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 28339802 is about 5323.5140649763. The cubic root of 28339802 is about 304.8823410722.

The spelling of 28339802 in words is "twenty-eight million, three hundred thirty-nine thousand, eight hundred two".