22162158 has 12 divisors (see below), whose sum is σ = 48018048. Its totient is φ = 7387380.

The previous prime is 22162141. The next prime is 22162159. The reversal of 22162158 is 85126122.

It is a happy number.

It is a super-2 number, since 2×22162158² = 982322494433928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22162159) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 615598 + ... + 615633.

It is an arithmetic number, because the mean of its divisors is an integer number (4001504).

Almost surely, 2^22162158 is an apocalyptic number.

22162158 is an abundant number, since it is smaller than the sum of its proper divisors (25855890).

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

22162158 is a wasteful number, since it uses less digits than its factorization.

22162158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231239 (or 1231236 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 22162158 is about 4707.6701243821. The cubic root of 22162158 is about 280.8906925742.

It can be divided in two parts, 2 and 2162158, that added together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 22162158 in words is "twenty-two million, one hundred sixty-two thousand, one hundred fifty-eight".