28691302 has 4 divisors (see below), whose sum is σ = 43036956. Its totient is φ = 14345650.

The previous prime is 28691297. The next prime is 28691321. The reversal of 28691302 is 20319682.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7172824 + ... + 7172827.

It is an arithmetic number, because the mean of its divisors is an integer number (10759239).

Almost surely, 2^28691302 is an apocalyptic number.

28691302 is a deficient number, since it is larger than the sum of its proper divisors (14345654).

28691302 is a wasteful number, since it uses less digits than its factorization.

28691302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345653.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 28691302 is about 5356.4262339735. The cubic root of 28691302 is about 306.1376557525.

The spelling of 28691302 in words is "twenty-eight million, six hundred ninety-one thousand, three hundred two".