22687146 has 48 divisors (see below), whose sum is σ = 52498368. Its totient is φ = 7056000.

The previous prime is 22687099. The next prime is 22687157. The reversal of 22687146 is 64178622.

It is a self number, because there is not a number n which added to its sum of digits gives 22687146.

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 23 ways as a sum of consecutive naturals, for example, 45961 + ... + 46451.

It is an arithmetic number, because the mean of its divisors is an integer number (1093716).

Almost surely, 2^22687146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22687146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26249184).

22687146 is an abundant number, since it is smaller than the sum of its proper divisors (29811222).

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

22687146 is a wasteful number, since it uses less digits than its factorization.

22687146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 664 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22687146 is about 4763.1025603067. The cubic root of 22687146 is about 283.0913646577.

The spelling of 22687146 in words is "twenty-two million, six hundred eighty-seven thousand, one hundred forty-six".