22146512 has 20 divisors (see below), whose sum is σ = 45433476. Its totient is φ = 10421760.

The previous prime is 22146499. The next prime is 22146547. The reversal of 22146512 is 21564122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20286016 + 1860496 = 4504^2 + 1364^2 .

It is a super-2 number, since 2×22146512² = 980935987532288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 40439 + ... + 40982.

Almost surely, 2^22146512 is an apocalyptic number.

It is an amenable number.

22146512 is an abundant number, since it is smaller than the sum of its proper divisors (23286964).

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

22146512 is a wasteful number, since it uses less digits than its factorization.

22146512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81446 (or 81440 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 22146512 is about 4706.0080747912. The cubic root of 22146512 is about 280.8245761127.

The spelling of 22146512 in words is "twenty-two million, one hundred forty-six thousand, five hundred twelve".