40040734 has 16 divisors (see below), whose sum is σ = 62561376. Its totient is φ = 19202400.

The previous prime is 40040731. The next prime is 40040753. The reversal of 40040734 is 43704004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444 + ... + 9064.

It is an arithmetic number, because the mean of its divisors is an integer number (3910086).

Almost surely, 2^40040734 is an apocalyptic number.

40040734 is a deficient number, since it is larger than the sum of its proper divisors (22520642).

40040734 is a wasteful number, since it uses less digits than its factorization.

40040734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40040734 is about 6327.7748063597. The cubic root of 40040734 is about 342.1112402178. Note that the first 3 decimals are identical.

Adding to 40040734 its reverse (43704004), we get a palindrome (83744738).

The spelling of 40040734 in words is "forty million, forty thousand, seven hundred thirty-four".