28867822 has 8 divisors (see below), whose sum is σ = 43325496. Its totient is φ = 14425992.

The previous prime is 28867801. The next prime is 28867831. The reversal of 28867822 is 22876882.

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

It is a super-2 number, since 2×28867822² = 1666702294047368, which contains 22 as substring.

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, 3148 + ... + 8224.

It is an arithmetic number, because the mean of its divisors is an integer number (5415687).

Almost surely, 2^28867822 is an apocalyptic number.

28867822 is a deficient number, since it is larger than the sum of its proper divisors (14457674).

28867822 is a wasteful number, since it uses less digits than its factorization.

28867822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922.

The product of its digits is 172032, while the sum is 43.

The square root of 28867822 is about 5372.8783719716. The cubic root of 28867822 is about 306.7641983940.

The spelling of 28867822 in words is "twenty-eight million, eight hundred sixty-seven thousand, eight hundred twenty-two".