28922386 has 8 divisors (see below), whose sum is σ = 43409520. Its totient is φ = 14452548.

The previous prime is 28922371. The next prime is 28922407. The reversal of 28922386 is 68322982.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (5426190).

Almost surely, 2^28922386 is an apocalyptic number.

28922386 is a deficient number, since it is larger than the sum of its proper divisors (14487134).

28922386 is a wasteful number, since it uses less digits than its factorization.

28922386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8648.

The product of its digits is 82944, while the sum is 40.

The square root of 28922386 is about 5377.9537000610. The cubic root of 28922386 is about 306.9573517133.

The spelling of 28922386 in words is "twenty-eight million, nine hundred twenty-two thousand, three hundred eighty-six".