22129684 has 6 divisors (see below), whose sum is σ = 38726954. Its totient is φ = 11064840.

The previous prime is 22129669. The next prime is 22129711. The reversal of 22129684 is 48692122.

It can be written as a sum of positive squares in only one way, i.e., 16224784 + 5904900 = 4028^2 + 2430^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2766207 + ... + 2766214.

Almost surely, 2^22129684 is an apocalyptic number.

It is an amenable number.

22129684 is a deficient number, since it is larger than the sum of its proper divisors (16597270).

22129684 is a wasteful number, since it uses less digits than its factorization.

22129684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532425 (or 5532423 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 22129684 is about 4704.2198077896. The cubic root of 22129684 is about 280.7534300196.

The spelling of 22129684 in words is "twenty-two million, one hundred twenty-nine thousand, six hundred eighty-four".