40040530 has 32 divisors (see below), whose sum is σ = 74856960. Its totient is φ = 15404160.

The previous prime is 40040513. The next prime is 40040531. The reversal of 40040530 is 3504004.

It is not an unprimeable number, because it can be changed into a prime (40040531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70086 + ... + 70654.

It is an arithmetic number, because the mean of its divisors is an integer number (2339280).

Almost surely, 2^40040530 is an apocalyptic number.

40040530 is a deficient number, since it is larger than the sum of its proper divisors (34816430).

40040530 is a wasteful number, since it uses less digits than its factorization.

40040530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40040530 is about 6327.7586869286. The cubic root of 40040530 is about 342.1106592194.

Adding to 40040530 its reverse (3504004), we get a palindrome (43544534).

The spelling of 40040530 in words is "forty million, forty thousand, five hundred thirty".