28429922 has 8 divisors (see below), whose sum is σ = 42670272. Its totient is φ = 14206500.

The previous prime is 28429903. The next prime is 28429931. The reversal of 28429922 is 22992482.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547 + ... + 7697.

It is an arithmetic number, because the mean of its divisors is an integer number (5333784).

Almost surely, 2^28429922 is an apocalyptic number.

28429922 is a deficient number, since it is larger than the sum of its proper divisors (14240350).

28429922 is a wasteful number, since it uses less digits than its factorization.

28429922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464.

The product of its digits is 41472, while the sum is 38.

The square root of 28429922 is about 5331.9716803449. The cubic root of 28429922 is about 305.2051723508.

The spelling of 28429922 in words is "twenty-eight million, four hundred twenty-nine thousand, nine hundred twenty-two".