22143020 has 48 divisors (see below), whose sum is σ = 49871808. Its totient is φ = 8236800.

The previous prime is 22143019. The next prime is 22143041. The reversal of 22143020 is 2034122.

It is a junction number, because it is equal to n+sod(n) for n = 22142986 and 22143004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16370 + ... + 17670.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^22143020 is an apocalyptic number.

22143020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22143020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24935904).

22143020 is an abundant number, since it is smaller than the sum of its proper divisors (27728788).

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

22143020 is a wasteful number, since it uses less digits than its factorization.

22143020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22143020 is about 4705.6370450769. The cubic root of 22143020 is about 280.8098154593.

Adding to 22143020 its reverse (2034122), we get a palindrome (24177142).

The spelling of 22143020 in words is "twenty-two million, one hundred forty-three thousand, twenty".