40040832 has 96 divisors (see below), whose sum is σ = 115355880. Its totient is φ = 12300288.

The previous prime is 40040813. The next prime is 40040839. The reversal of 40040832 is 23804004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 40040799 and 40040808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040839) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 64588 + ... + 65204.

Almost surely, 2^40040832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40040832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57677940).

40040832 is an abundant number, since it is smaller than the sum of its proper divisors (75315048).

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

40040832 is a wasteful number, since it uses less digits than its factorization.

40040832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40040832 is about 6327.7825499933. The cubic root of 40040832 is about 342.1115193242. Note that the first 3 decimals are identical.

Adding to 40040832 its reverse (23804004), we get a palindrome (63844836).

The spelling of 40040832 in words is "forty million, forty thousand, eight hundred thirty-two".