22500030 has 64 divisors (see below), whose sum is σ = 62092800. Its totient is φ = 5111424.

The previous prime is 22500029. The next prime is 22500053. The reversal of 22500030 is 3000522.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22499979 and 22500015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64296 + ... + 64644.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 2^22500030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22500030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31046400).

22500030 is an abundant number, since it is smaller than the sum of its proper divisors (39592770).

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

22500030 is a wasteful number, since it uses less digits than its factorization.

22500030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 22500030 is about 4743.4196525292. The cubic root of 22500030 is about 282.3109341357.

Adding to 22500030 its reverse (3000522), we get a palindrome (25500552).

The spelling of 22500030 in words is "twenty-two million, five hundred thousand, thirty".