22140045 has 48 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 11191680.

The previous prime is 22140029. The next prime is 22140047. The reversal of 22140045 is 54004122.

22140045 is a `hidden beast` number, since 221 + 400 + 45 = 666.

It is not a de Polignac number, because 22140045 - 2⁴ = 22140029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82171 + ... + 82439.

It is an arithmetic number, because the mean of its divisors is an integer number (842400).

Almost surely, 2^22140045 is an apocalyptic number.

It is an amenable number.

22140045 is a deficient number, since it is larger than the sum of its proper divisors (18295155).

22140045 is a wasteful number, since it uses less digits than its factorization.

22140045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22140045 is about 4705.3209242304. The cubic root of 22140045 is about 280.7972389360.

Adding to 22140045 its reverse (54004122), we get a palindrome (76144167).

It can be divided in two parts, 221400 and 45, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 22140045 in words is "twenty-two million, one hundred forty thousand, forty-five".