28223486 has 8 divisors (see below), whose sum is σ = 42845544. Its totient is φ = 13941640.

The previous prime is 28223477. The next prime is 28223509. The reversal of 28223486 is 68432282.

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

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, 84845 + ... + 85176.

It is an arithmetic number, because the mean of its divisors is an integer number (5355693).

Almost surely, 2^28223486 is an apocalyptic number.

28223486 is a deficient number, since it is larger than the sum of its proper divisors (14622058).

28223486 is a wasteful number, since it uses less digits than its factorization.

28223486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170106.

The product of its digits is 36864, while the sum is 35.

The square root of 28223486 is about 5312.5780935437. The cubic root of 28223486 is about 304.4646561706.

The spelling of 28223486 in words is "twenty-eight million, two hundred twenty-three thousand, four hundred eighty-six".