28564694 has 4 divisors (see below), whose sum is σ = 42847044. Its totient is φ = 14282346.

The previous prime is 28564687. The next prime is 28564717. The reversal of 28564694 is 49646582.

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, 7141172 + ... + 7141175.

It is an arithmetic number, because the mean of its divisors is an integer number (10711761).

Almost surely, 2^28564694 is an apocalyptic number.

28564694 is a deficient number, since it is larger than the sum of its proper divisors (14282350).

28564694 is a wasteful number, since it uses less digits than its factorization.

28564694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14282349.

The product of its digits is 414720, while the sum is 44.

The square root of 28564694 is about 5344.5948396487. The cubic root of 28564694 is about 305.6866871550.

The spelling of 28564694 in words is "twenty-eight million, five hundred sixty-four thousand, six hundred ninety-four".