22202728 has 32 divisors (see below), whose sum is σ = 44112960. Its totient is φ = 10454400.

The previous prime is 22202711. The next prime is 22202767. The reversal of 22202728 is 82720222.

It is a happy number.

It is a super-2 number, since 2×22202728² = 985922261283968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 13228.

It is an arithmetic number, because the mean of its divisors is an integer number (1378530).

Almost surely, 2^22202728 is an apocalyptic number.

It is an amenable number.

22202728 is a deficient number, since it is larger than the sum of its proper divisors (21910232).

22202728 is a wasteful number, since it uses less digits than its factorization.

22202728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 22202728 is about 4711.9770797405. The cubic root of 22202728 is about 281.0619873971.

The spelling of 22202728 in words is "twenty-two million, two hundred two thousand, seven hundred twenty-eight".