22156306 has 4 divisors (see below), whose sum is σ = 33234462. Its totient is φ = 11078152.

The previous prime is 22156271. The next prime is 22156307. The reversal of 22156306 is 60365122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 2752281 = 4405^2 + 1659^2 .

It is not an unprimeable number, because it can be changed into a prime (22156307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5539075 + ... + 5539078.

Almost surely, 2^22156306 is an apocalyptic number.

22156306 is a deficient number, since it is larger than the sum of its proper divisors (11078156).

22156306 is a wasteful number, since it uses less digits than its factorization.

22156306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11078155.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 22156306 is about 4707.0485444703. The cubic root of 22156306 is about 280.8659669881.

The spelling of 22156306 in words is "twenty-two million, one hundred fifty-six thousand, three hundred six".