22402264 has 8 divisors (see below), whose sum is σ = 42004260. Its totient is φ = 11201128.

The previous prime is 22402223. The next prime is 22402271. The reversal of 22402264 is 46220422.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22402264² = 1003722864651392, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1400134 + ... + 1400149.

Almost surely, 2^22402264 is an apocalyptic number.

It is an amenable number.

22402264 is a deficient number, since it is larger than the sum of its proper divisors (19601996).

22402264 is a wasteful number, since it uses less digits than its factorization.

22402264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800289 (or 2800285 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 22402264 is about 4733.1029990906. The cubic root of 22402264 is about 281.9014460367.

Adding to 22402264 its reverse (46220422), we get a palindrome (68622686).

The spelling of 22402264 in words is "twenty-two million, four hundred two thousand, two hundred sixty-four".