22305206 has 16 divisors (see below), whose sum is σ = 41713920. Its totient is φ = 8690280.

The previous prime is 22305187. The next prime is 22305251. The reversal of 22305206 is 60250322.

It is a happy number.

It is a congruent number.

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, 72266 + ... + 72573.

It is an arithmetic number, because the mean of its divisors is an integer number (2607120).

Almost surely, 2^22305206 is an apocalyptic number.

22305206 is a deficient number, since it is larger than the sum of its proper divisors (19408714).

22305206 is a wasteful number, since it uses less digits than its factorization.

22305206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144859.

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

The square root of 22305206 is about 4722.8387649802. The cubic root of 22305206 is about 281.4937432028.

Adding to 22305206 its reverse (60250322), we get a palindrome (82555528).

Subtracting 22305206 from its reverse (60250322), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 22305206 in words is "twenty-two million, three hundred five thousand, two hundred six".