22272276 has 24 divisors (see below), whose sum is σ = 55966624. Its totient is φ = 6852960.

The previous prime is 22272269. The next prime is 22272277. The reversal of 22272276 is 67227222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272277) 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, 71230 + ... + 71541.

Almost surely, 2^22272276 is an apocalyptic number.

22272276 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22272276 is an abundant number, since it is smaller than the sum of its proper divisors (33694348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22272276 is a wasteful number, since it uses less digits than its factorization.

22272276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142791 (or 142789 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 22272276 is about 4719.3512265988. The cubic root of 22272276 is about 281.3551484373.

Adding to 22272276 its reverse (67227222), we get a palindrome (89499498).

The spelling of 22272276 in words is "twenty-two million, two hundred seventy-two thousand, two hundred seventy-six".