28313822 has 4 divisors (see below), whose sum is σ = 42470736. Its totient is φ = 14156910.

The previous prime is 28313807. The next prime is 28313849. The reversal of 28313822 is 22831382.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7078454 + ... + 7078457.

It is an arithmetic number, because the mean of its divisors is an integer number (10617684).

Almost surely, 2^28313822 is an apocalyptic number.

28313822 is a deficient number, since it is larger than the sum of its proper divisors (14156914).

28313822 is a wasteful number, since it uses less digits than its factorization.

28313822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14156913.

The product of its digits is 4608, while the sum is 29.

The square root of 28313822 is about 5321.0733879547. The cubic root of 28313822 is about 304.7891474678.

The spelling of 28313822 in words is "twenty-eight million, three hundred thirteen thousand, eight hundred twenty-two".