22115430 has 96 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 5575392.

The previous prime is 22115413. The next prime is 22115447. The reversal of 22115430 is 3451122.

22115430 is a `hidden beast` number, since 221 + 15 + 430 = 666.

It is an interprime number because it is at equal distance from previous prime (22115413) and next prime (22115447).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45931 + ... + 46409.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^22115430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22115430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31449600).

22115430 is an abundant number, since it is smaller than the sum of its proper divisors (40783770).

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

22115430 is a wasteful number, since it uses less digits than its factorization.

22115430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 508 counting only the distinct ones).

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

The square root of 22115430 is about 4702.7045410062. The cubic root of 22115430 is about 280.6931381673.

Adding to 22115430 its reverse (3451122), we get a palindrome (25566552).

It can be divided in two parts, 221 and 15430, that added together give a palindrome (15651).

The spelling of 22115430 in words is "twenty-two million, one hundred fifteen thousand, four hundred thirty".