40530220 has 24 divisors (see below), whose sum is σ = 85234464. Its totient is φ = 16189056.

The previous prime is 40530199. The next prime is 40530223. The reversal of 40530220 is 2203504.

It is a junction number, because it is equal to n+sod(n) for n = 40530194 and 40530203.

It is not an unprimeable number, because it can be changed into a prime (40530223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23632 + ... + 25288.

It is an arithmetic number, because the mean of its divisors is an integer number (3551436).

Almost surely, 2^40530220 is an apocalyptic number.

It is an amenable number.

40530220 is an abundant number, since it is smaller than the sum of its proper divisors (44704244).

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

40530220 is a wasteful number, since it uses less digits than its factorization.

40530220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40530220 is about 6366.3348953695. The cubic root of 40530220 is about 343.4996669976.

Adding to 40530220 its reverse (2203504), we get a palindrome (42733724).

It can be divided in two parts, 405 and 30220, that added together give a square (30625 = 175²).

The spelling of 40530220 in words is "forty million, five hundred thirty thousand, two hundred twenty".