22503666 has 8 divisors (see below), whose sum is σ = 45007344. Its totient is φ = 7501220.

The previous prime is 22503661. The next prime is 22503671. The reversal of 22503666 is 66630522.

It is an interprime number because it is at equal distance from previous prime (22503661) and next prime (22503671).

It is a sphenic number, since it is the product of 3 distinct primes.

22503666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22503661) by changing a digit.

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, 1875300 + ... + 1875311.

It is an arithmetic number, because the mean of its divisors is an integer number (5625918).

Almost surely, 2^22503666 is an apocalyptic number.

22503666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22503666 is a wasteful number, since it uses less digits than its factorization.

22503666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750616.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 22503666 is about 4743.8029048433. The cubic root of 22503666 is about 282.3261404453.

The spelling of 22503666 in words is "twenty-two million, five hundred three thousand, six hundred sixty-six".