22131654 has 32 divisors (see below), whose sum is σ = 47648736. Its totient is φ = 6827520.

The previous prime is 22131649. The next prime is 22131673. The reversal of 22131654 is 45613122.

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 15 ways as a sum of consecutive naturals, for example, 4444 + ... + 8000.

It is an arithmetic number, because the mean of its divisors is an integer number (1489023).

Almost surely, 2^22131654 is an apocalyptic number.

22131654 is an abundant number, since it is smaller than the sum of its proper divisors (25517082).

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

22131654 is a wasteful number, since it uses less digits than its factorization.

22131654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640.

The product of its digits is 1440, while the sum is 24.

The square root of 22131654 is about 4704.4291896042. The cubic root of 22131654 is about 280.7617607282.

Adding to 22131654 its reverse (45613122), we get a palindrome (67744776).

The spelling of 22131654 in words is "twenty-two million, one hundred thirty-one thousand, six hundred fifty-four".