22820085 has 12 divisors (see below), whose sum is σ = 39554892. Its totient is φ = 12170688.

The previous prime is 22820081. The next prime is 22820087. The reversal of 22820085 is 58002822.

It can be written as a sum of positive squares in 2 ways, for example, as 17918289 + 4901796 = 4233^2 + 2214^2 .

It is not a de Polignac number, because 22820085 - 2² = 22820081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22820081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253512 + ... + 253601.

It is an arithmetic number, because the mean of its divisors is an integer number (3296241).

Almost surely, 2^22820085 is an apocalyptic number.

It is an amenable number.

22820085 is a deficient number, since it is larger than the sum of its proper divisors (16734807).

22820085 is a wasteful number, since it uses less digits than its factorization.

22820085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507124 (or 507121 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 22820085 is about 4777.0372617345. The cubic root of 22820085 is about 283.6432280199.

The spelling of 22820085 in words is "twenty-two million, eight hundred twenty thousand, eighty-five".