20222000 has 40 divisors (see below), whose sum is σ = 48901632. Its totient is φ = 8088000.

The previous prime is 20221987. The next prime is 20222003. The reversal of 20222000 is 22202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (20222003) 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, 3056 + ... + 7055.

Almost surely, 2^20222000 is an apocalyptic number.

20222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222000 is an abundant number, since it is smaller than the sum of its proper divisors (28679632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20222000 is a wasteful number, since it uses less digits than its factorization.

20222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 20222000 is about 4496.8878126989. The cubic root of 20222000 is about 272.4424028873.

Adding to 20222000 its reverse (22202), we get a palindrome (20244202).

The spelling of 20222000 in words is "twenty million, two hundred twenty-two thousand".