22327240 has 32 divisors (see below), whose sum is σ = 54101880. Its totient is φ = 8243712.

The previous prime is 22327231. The next prime is 22327259. The reversal of 22327240 is 4272322.

It can be written as a sum of positive squares in 4 ways, for example, as 5827396 + 16499844 = 2414^2 + 4062^2 .

It is a super-3 number, since 3×22327240³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20949 + ... + 21988.

Almost surely, 2^22327240 is an apocalyptic number.

22327240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22327240 is an abundant number, since it is smaller than the sum of its proper divisors (31774640).

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

22327240 is a wasteful number, since it uses less digits than its factorization.

22327240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42961 (or 42957 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 22327240 is about 4725.1708963804. The cubic root of 22327240 is about 281.5864030646.

Adding to 22327240 its reverse (4272322), we get a palindrome (26599562).

The spelling of 22327240 in words is "twenty-two million, three hundred twenty-seven thousand, two hundred forty".