22240737 has 40 divisors (see below), whose sum is σ = 35147112. Its totient is φ = 13996800.

The previous prime is 22240721. The next prime is 22240739. The reversal of 22240737 is 73704222.

22240737 is a `hidden beast` number, since 222 + 407 + 37 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 81 + 22240656 = 9^2 + 4716^2 .

It is not a de Polignac number, because 22240737 - 2⁴ = 22240721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 22240737.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240739) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 122787 + ... + 122967.

Almost surely, 2^22240737 is an apocalyptic number.

22240737 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22240737 is a deficient number, since it is larger than the sum of its proper divisors (12906375).

22240737 is a wasteful number, since it uses less digits than its factorization.

22240737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 22240737 is about 4716.0085877784. The cubic root of 22240737 is about 281.2222799347. Note that the first 4 decimals are identical.

Adding to 22240737 its reverse (73704222), we get a palindrome (95944959).

The spelling of 22240737 in words is "twenty-two million, two hundred forty thousand, seven hundred thirty-seven".