22250306 has 8 divisors (see below), whose sum is σ = 35942844. Its totient is φ = 10269360.

The previous prime is 22250251. The next prime is 22250321. The reversal of 22250306 is 60305222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22174681 + 75625 = 4709^2 + 275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22250306² = 990152234187272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427865 + ... + 427916.

Almost surely, 2^22250306 is an apocalyptic number.

22250306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22250306 is a deficient number, since it is larger than the sum of its proper divisors (13692538).

22250306 is a wasteful number, since it uses less digits than its factorization.

22250306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855796.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22250306 is about 4717.0230018519. The cubic root of 22250306 is about 281.2626057889.

Adding to 22250306 its reverse (60305222), we get a palindrome (82555528).

The spelling of 22250306 in words is "twenty-two million, two hundred fifty thousand, three hundred six".