22506258 has 16 divisors (see below), whose sum is σ = 45776160. Its totient is φ = 7374816.

The previous prime is 22506247. The next prime is 22506269. The reversal of 22506258 is 85260522.

It is an interprime number because it is at equal distance from previous prime (22506247) and next prime (22506269).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31435 + ... + 32142.

It is an arithmetic number, because the mean of its divisors is an integer number (2861010).

Almost surely, 2^22506258 is an apocalyptic number.

22506258 is an abundant number, since it is smaller than the sum of its proper divisors (23269902).

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

22506258 is a wasteful number, since it uses less digits than its factorization.

22506258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63641.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 22506258 is about 4744.0760955111. The cubic root of 22506258 is about 282.3369795869.

The spelling of 22506258 in words is "twenty-two million, five hundred six thousand, two hundred fifty-eight".