22016250 has 120 divisors (see below), whose sum is σ = 63354720. Its totient is φ = 5508000.

The previous prime is 22016219. The next prime is 22016261. The reversal of 22016250 is 5261022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 213699 + ... + 213801.

It is an arithmetic number, because the mean of its divisors is an integer number (527956).

Almost surely, 2^22016250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22016250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31677360).

22016250 is an abundant number, since it is smaller than the sum of its proper divisors (41338470).

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

22016250 is a wasteful number, since it uses less digits than its factorization.

22016250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22016250 is about 4692.1476958851. The cubic root of 22016250 is about 280.2729056912.

Adding to 22016250 its reverse (5261022), we get a palindrome (27277272).

The spelling of 22016250 in words is "twenty-two million, sixteen thousand, two hundred fifty".