22727272 has 32 divisors (see below), whose sum is σ = 43740000. Its totient is φ = 11067328.

The previous prime is 22727267. The next prime is 22727279. The reversal of 22727272 is 27272722.

It is a happy number.

22727272 is a modest number, since divided by 7272 gives 2272 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22727279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84354 + ... + 84622.

It is an arithmetic number, because the mean of its divisors is an integer number (1366875).

Almost surely, 2^22727272 is an apocalyptic number.

It is an amenable number.

22727272 is a deficient number, since it is larger than the sum of its proper divisors (21012728).

22727272 is a wasteful number, since it uses less digits than its factorization.

22727272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 509 counting only the distinct ones).

The product of its digits is 10976, while the sum is 31.

The square root of 22727272 is about 4767.3128699510. The cubic root of 22727272 is about 283.2581644499.

Adding to 22727272 its reverse (27272722), we get a palindrome (49999994).

It can be divided in two parts, 2272727 and 2, that multiplied together give a palindrome (4545454).

The spelling of 22727272 in words is "twenty-two million, seven hundred twenty-seven thousand, two hundred seventy-two".