40406232 has 32 divisors (see below), whose sum is σ = 101761200. Its totient is φ = 13369344.

The previous prime is 40406167. The next prime is 40406273. The reversal of 40406232 is 23260404.

It is a junction number, because it is equal to n+sod(n) for n = 40406199 and 40406208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2857 + ... + 9432.

Almost surely, 2^40406232 is an apocalyptic number.

It is an amenable number.

40406232 is an abundant number, since it is smaller than the sum of its proper divisors (61354968).

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

40406232 is a wasteful number, since it uses less digits than its factorization.

40406232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435 (or 12431 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40406232 is about 6356.5896516922. The cubic root of 40406232 is about 343.1490369391.

Adding to 40406232 its reverse (23260404), we get a palindrome (63666636).

The spelling of 40406232 in words is "forty million, four hundred six thousand, two hundred thirty-two".