22115506 has 32 divisors (see below), whose sum is σ = 40504320. Its totient is φ = 8845200.

The previous prime is 22115473. The next prime is 22115507. The reversal of 22115506 is 60551122.

It is not an unprimeable number, because it can be changed into a prime (22115507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18301 + ... + 19471.

It is an arithmetic number, because the mean of its divisors is an integer number (1265760).

Almost surely, 2^22115506 is an apocalyptic number.

22115506 is a deficient number, since it is larger than the sum of its proper divisors (18388814).

22115506 is a wasteful number, since it uses less digits than its factorization.

22115506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 22115506 is about 4702.7126214558. The cubic root of 22115506 is about 280.6934597023.

Adding to 22115506 its reverse (60551122), we get a palindrome (82666628).

The spelling of 22115506 in words is "twenty-two million, one hundred fifteen thousand, five hundred six".