22062500 has 42 divisors (see below), whose sum is σ = 48397818. Its totient is φ = 8800000.

The previous prime is 22062499. The next prime is 22062527. The reversal of 22062500 is 526022.

It can be written as a sum of positive squares in 7 ways, for example, as 21921124 + 141376 = 4682^2 + 376^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 62324 + ... + 62676.

It is an arithmetic number, because the mean of its divisors is an integer number (1152329).

Almost surely, 2^22062500 is an apocalyptic number.

22062500 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 22062500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24198909).

22062500 is an abundant number, since it is smaller than the sum of its proper divisors (26335318).

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

22062500 is an frugal number, since it uses more digits than its factorization.

22062500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22062500 is about 4697.0735570140. The cubic root of 22062500 is about 280.4690268216.

Adding to 22062500 its reverse (526022), we get a palindrome (22588522).

The spelling of 22062500 in words is "twenty-two million, sixty-two thousand, five hundred".