40563220 has 24 divisors (see below), whose sum is σ = 85303008. Its totient is φ = 16202400.

The previous prime is 40563217. The next prime is 40563247. The reversal of 40563220 is 2236504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40563191 and 40563200.

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, 25035 + ... + 26605.

It is an arithmetic number, because the mean of its divisors is an integer number (3554292).

Almost surely, 2^40563220 is an apocalyptic number.

It is an amenable number.

40563220 is an abundant number, since it is smaller than the sum of its proper divisors (44739788).

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

40563220 is a wasteful number, since it uses less digits than its factorization.

40563220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40563220 is about 6368.9261261220. The cubic root of 40563220 is about 343.5928683497.

Adding to 40563220 its reverse (2236504), we get a palindrome (42799724).

The spelling of 40563220 in words is "forty million, five hundred sixty-three thousand, two hundred twenty".