22820855 has 8 divisors (see below), whose sum is σ = 27594864. Its totient is φ = 18116800.

The previous prime is 22820839. The next prime is 22820857. The reversal of 22820855 is 55802822.

It is a happy number.

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

It is not a de Polignac number, because 22820855 - 2⁴ = 22820839 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 (22820857) 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 in 7 ways as a sum of consecutive naturals, for example, 16766 + ... + 18075.

It is an arithmetic number, because the mean of its divisors is an integer number (3449358).

Almost surely, 2^22820855 is an apocalyptic number.

22820855 is a deficient number, since it is larger than the sum of its proper divisors (4774009).

22820855 is a wasteful number, since it uses less digits than its factorization.

22820855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34977.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 22820855 is about 4777.1178549414. The cubic root of 22820855 is about 283.6464182334.

The spelling of 22820855 in words is "twenty-two million, eight hundred twenty thousand, eight hundred fifty-five".