28529894 has 4 divisors (see below), whose sum is σ = 42794844. Its totient is φ = 14264946.

The previous prime is 28529869. The next prime is 28529911. The reversal of 28529894 is 49892582.

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, 7132472 + ... + 7132475.

It is an arithmetic number, because the mean of its divisors is an integer number (10698711).

Almost surely, 2^28529894 is an apocalyptic number.

28529894 is a deficient number, since it is larger than the sum of its proper divisors (14264950).

28529894 is a wasteful number, since it uses less digits than its factorization.

28529894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14264949.

The product of its digits is 414720, while the sum is 47.

The square root of 28529894 is about 5341.3382218317. The cubic root of 28529894 is about 305.5624986534.

The spelling of 28529894 in words is "twenty-eight million, five hundred twenty-nine thousand, eight hundred ninety-four".