28064494 has 4 divisors (see below), whose sum is σ = 42096744. Its totient is φ = 14032246.

The previous prime is 28064483. The next prime is 28064521. The reversal of 28064494 is 49446082.

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

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, 7016122 + ... + 7016125.

It is an arithmetic number, because the mean of its divisors is an integer number (10524186).

Almost surely, 2^28064494 is an apocalyptic number.

28064494 is a deficient number, since it is larger than the sum of its proper divisors (14032250).

28064494 is a wasteful number, since it uses less digits than its factorization.

28064494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032249.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 28064494 is about 5297.5932271174. The cubic root of 28064494 is about 303.8918633742.

The spelling of 28064494 in words is "twenty-eight million, sixty-four thousand, four hundred ninety-four".