40434220 has 12 divisors (see below), whose sum is σ = 84911904. Its totient is φ = 16173680.

The previous prime is 40434217. The next prime is 40434221. The reversal of 40434220 is 2243404.

40434220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40434220² = 3269852294016800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40434221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1010836 + ... + 1010875.

It is an arithmetic number, because the mean of its divisors is an integer number (7075992).

Almost surely, 2^40434220 is an apocalyptic number.

It is an amenable number.

40434220 is an abundant number, since it is smaller than the sum of its proper divisors (44477684).

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

40434220 is a wasteful number, since it uses less digits than its factorization.

40434220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021720 (or 2021718 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40434220 is about 6358.7907655465. The cubic root of 40434220 is about 343.2282478112.

Adding to 40434220 its reverse (2243404), we get a palindrome (42677624).

The spelling of 40434220 in words is "forty million, four hundred thirty-four thousand, two hundred twenty".