28429822 has 4 divisors (see below), whose sum is σ = 42644736. Its totient is φ = 14214910.

The previous prime is 28429789. The next prime is 28429823. The reversal of 28429822 is 22892482.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28429823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107454 + ... + 7107457.

It is an arithmetic number, because the mean of its divisors is an integer number (10661184).

Almost surely, 2^28429822 is an apocalyptic number.

28429822 is a deficient number, since it is larger than the sum of its proper divisors (14214914).

28429822 is a wasteful number, since it uses less digits than its factorization.

28429822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14214913.

The product of its digits is 36864, while the sum is 37.

The square root of 28429822 is about 5331.9623029425. The cubic root of 28429822 is about 305.2048145054.

The spelling of 28429822 in words is "twenty-eight million, four hundred twenty-nine thousand, eight hundred twenty-two".