22402768 has 10 divisors (see below), whose sum is σ = 43405394. Its totient is φ = 11201376.

The previous prime is 22402693. The next prime is 22402771. The reversal of 22402768 is 86720422.

It can be written as a sum of positive squares in only one way, i.e., 19607184 + 2795584 = 4428^2 + 1672^2 .

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, 700071 + ... + 700102.

Almost surely, 2^22402768 is an apocalyptic number.

It is an amenable number.

22402768 is a deficient number, since it is larger than the sum of its proper divisors (21002626).

22402768 is a wasteful number, since it uses less digits than its factorization.

22402768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400181 (or 1400175 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 22402768 is about 4733.1562408186. The cubic root of 22402768 is about 281.9035600680.

The spelling of 22402768 in words is "twenty-two million, four hundred two thousand, seven hundred sixty-eight".