22250146 has 16 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 10962000.

The previous prime is 22250143. The next prime is 22250153. The reversal of 22250146 is 64105222.

It is not an unprimeable number, because it can be changed into a prime (22250143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63580 + ... + 63928.

It is an arithmetic number, because the mean of its divisors is an integer number (2116800).

Almost surely, 2^22250146 is an apocalyptic number.

22250146 is a deficient number, since it is larger than the sum of its proper divisors (11618654).

22250146 is a wasteful number, since it uses less digits than its factorization.

22250146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 22250146 is about 4717.0060419720. The cubic root of 22250146 is about 281.2619316090.

Adding to 22250146 its reverse (64105222), we get a palindrome (86355368).

The spelling of 22250146 in words is "twenty-two million, two hundred fifty thousand, one hundred forty-six".