28622005 has 8 divisors (see below), whose sum is σ = 35839872. Its totient is φ = 21901968.

The previous prime is 28622003. The next prime is 28622029. The reversal of 28622005 is 50022682.

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

It is a cyclic number.

It is not a de Polignac number, because 28622005 - 2¹ = 28622003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28622003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124329 + ... + 124558.

It is an arithmetic number, because the mean of its divisors is an integer number (4479984).

Almost surely, 2^28622005 is an apocalyptic number.

It is an amenable number.

28622005 is a deficient number, since it is larger than the sum of its proper divisors (7217867).

28622005 is a wasteful number, since it uses less digits than its factorization.

28622005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248915.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28622005 is about 5349.9537381177. The cubic root of 28622005 is about 305.8909895498.

Adding to 28622005 its reverse (50022682), we get a palindrome (78644687).

The spelling of 28622005 in words is "twenty-eight million, six hundred twenty-two thousand, five".