22149684 has 18 divisors (see below), whose sum is σ = 55989570. Its totient is φ = 7383216.

The previous prime is 22149653. The next prime is 22149719. The reversal of 22149684 is 48694122.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 2965284 = 4380^2 + 1722^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 615269 = 22149684 / (2 + 2 + 1 + 4 + 9 + 6 + 8 + 4).

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 5 ways as a sum of consecutive naturals, for example, 307599 + ... + 307670.

Almost surely, 2^22149684 is an apocalyptic number.

It is an amenable number.

22149684 is an abundant number, since it is smaller than the sum of its proper divisors (33839886).

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

22149684 is a wasteful number, since it uses less digits than its factorization.

22149684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615279 (or 615274 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 22149684 is about 4706.3450787209. The cubic root of 22149684 is about 280.8379827842.

The spelling of 22149684 in words is "twenty-two million, one hundred forty-nine thousand, six hundred eighty-four".