22226140 has 24 divisors (see below), whose sum is σ = 49421232. Its totient is φ = 8367360.

The previous prime is 22226137. The next prime is 22226153. The reversal of 22226140 is 4162222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32346 + ... + 33025.

It is an arithmetic number, because the mean of its divisors is an integer number (2059218).

Almost surely, 2^22226140 is an apocalyptic number.

22226140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22226140 is an abundant number, since it is smaller than the sum of its proper divisors (27195092).

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

22226140 is a wasteful number, since it uses less digits than its factorization.

22226140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65397 (or 65395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22226140 is about 4714.4607326819. The cubic root of 22226140 is about 281.1607427052.

Adding to 22226140 its reverse (4162222), we get a palindrome (26388362).

It can be divided in two parts, 22226 and 140, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 22226140 in words is "twenty-two million, two hundred twenty-six thousand, one hundred forty".