28865894 has 8 divisors (see below), whose sum is σ = 43326408. Its totient is φ = 14423760.

The previous prime is 28865887. The next prime is 28865911. The reversal of 28865894 is 49856882.

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

It is a Curzon number.

It is a congruent number.

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, 434 + ... + 7610.

It is an arithmetic number, because the mean of its divisors is an integer number (5415801).

Almost surely, 2^28865894 is an apocalyptic number.

28865894 is a deficient number, since it is larger than the sum of its proper divisors (14460514).

28865894 is a wasteful number, since it uses less digits than its factorization.

28865894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9190.

The product of its digits is 1105920, while the sum is 50.

The square root of 28865894 is about 5372.6989493177. The cubic root of 28865894 is about 306.7573689382.

The spelling of 28865894 in words is "twenty-eight million, eight hundred sixty-five thousand, eight hundred ninety-four".