40234520 has 32 divisors (see below), whose sum is σ = 90709200. Its totient is φ = 16061568.

The previous prime is 40234511. The next prime is 40234543. The reversal of 40234520 is 2543204.

40234520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40234492 and 40234501.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35726 + ... + 36834.

Almost surely, 2^40234520 is an apocalyptic number.

40234520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40234520 is an abundant number, since it is smaller than the sum of its proper divisors (50474680).

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

40234520 is a wasteful number, since it uses less digits than its factorization.

40234520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40234520 is about 6343.0686579920. The cubic root of 40234520 is about 342.6622599489.

Adding to 40234520 its reverse (2543204), we get a palindrome (42777724).

The spelling of 40234520 in words is "forty million, two hundred thirty-four thousand, five hundred twenty".