28422767 has 4 divisors (see below), whose sum is σ = 28888776. Its totient is φ = 27956760.

The previous prime is 28422763. The next prime is 28422811. The reversal of 28422767 is 76722482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28422767 - 2² = 28422763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28422767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28422763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232913 + ... + 233034.

It is an arithmetic number, because the mean of its divisors is an integer number (7222194).

Almost surely, 2^28422767 is an apocalyptic number.

28422767 is a deficient number, since it is larger than the sum of its proper divisors (466009).

28422767 is an equidigital number, since it uses as much as digits as its factorization.

28422767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466008.

The product of its digits is 75264, while the sum is 38.

The square root of 28422767 is about 5331.3006855738. The cubic root of 28422767 is about 305.1795663921.

The spelling of 28422767 in words is "twenty-eight million, four hundred twenty-two thousand, seven hundred sixty-seven".