22081936 has 20 divisors (see below), whose sum is σ = 43051312. Its totient is φ = 10971936.

The previous prime is 22081931. The next prime is 22081967. The reversal of 22081936 is 63918022.

It is a super-2 number, since 2×22081936² = 975223795016192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22081898 and 22081907.

It is not an unprimeable number, because it can be changed into a prime (22081931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626 + ... + 6841.

Almost surely, 2^22081936 is an apocalyptic number.

It is an amenable number.

22081936 is a deficient number, since it is larger than the sum of its proper divisors (20969376).

22081936 is a wasteful number, since it uses less digits than its factorization.

22081936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8638 (or 8632 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 22081936 is about 4699.1420493533. The cubic root of 22081936 is about 280.5513625503.

Adding to 22081936 its reverse (63918022), we get a palindrome (85999958).

The spelling of 22081936 in words is "twenty-two million, eighty-one thousand, nine hundred thirty-six".