28624286 has 8 divisors (see below), whose sum is σ = 43264584. Its totient is φ = 14202760.

The previous prime is 28624231. The next prime is 28624303. The reversal of 28624286 is 68242682.

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, 54365 + ... + 54888.

It is an arithmetic number, because the mean of its divisors is an integer number (5408073).

Almost surely, 2^28624286 is an apocalyptic number.

28624286 is a deficient number, since it is larger than the sum of its proper divisors (14640298).

28624286 is a wasteful number, since it uses less digits than its factorization.

28624286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109386.

The product of its digits is 73728, while the sum is 38.

The square root of 28624286 is about 5350.1669132841. The cubic root of 28624286 is about 305.8991152187.

The spelling of 28624286 in words is "twenty-eight million, six hundred twenty-four thousand, two hundred eighty-six".