22182020 has 24 divisors (see below), whose sum is σ = 53237184. Its totient is φ = 7605216.

The previous prime is 22182001. The next prime is 22182029. The reversal of 22182020 is 2028122.

It is a super-2 number, since 2×22182020² = 984084022560800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22182020.

It is not an unprimeable number, because it can be changed into a prime (22182029) 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, 79082 + ... + 79361.

It is an arithmetic number, because the mean of its divisors is an integer number (2218216).

Almost surely, 2^22182020 is an apocalyptic number.

22182020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22182020 is an abundant number, since it is smaller than the sum of its proper divisors (31055164).

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

22182020 is a wasteful number, since it uses less digits than its factorization.

22182020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158459 (or 158457 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 22182020 is about 4709.7791880299. The cubic root of 22182020 is about 280.9745800893.

The spelling of 22182020 in words is "twenty-two million, one hundred eighty-two thousand, twenty".