40406532 has 12 divisors (see below), whose sum is σ = 94281936. Its totient is φ = 13468840.

The previous prime is 40406503. The next prime is 40406533. The reversal of 40406532 is 23560404.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40406533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683594 + ... + 1683617.

It is an arithmetic number, because the mean of its divisors is an integer number (7856828).

Almost surely, 2^40406532 is an apocalyptic number.

It is an amenable number.

40406532 is an abundant number, since it is smaller than the sum of its proper divisors (53875404).

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

40406532 is a wasteful number, since it uses less digits than its factorization.

40406532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367218 (or 3367216 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40406532 is about 6356.6132492075. The cubic root of 40406532 is about 343.1498861848.

Adding to 40406532 its reverse (23560404), we get a palindrome (63966936).

The spelling of 40406532 in words is "forty million, four hundred six thousand, five hundred thirty-two".