40335530 has 16 divisors (see below), whose sum is σ = 72825480. Its totient is φ = 16084992.

The previous prime is 40335523. The next prime is 40335539. The reversal of 40335530 is 3553304.

It can be written as a sum of positive squares in 4 ways, for example, as 18498601 + 21836929 = 4301^2 + 4673^2 .

It is a Curzon number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 40335496 and 40335505.

It is not an unprimeable number, because it can be changed into a prime (40335539) 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, 2615 + ... + 9354.

Almost surely, 2^40335530 is an apocalyptic number.

40335530 is a deficient number, since it is larger than the sum of its proper divisors (32489950).

40335530 is a wasteful number, since it uses less digits than its factorization.

40335530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12313.

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 40335530 is about 6351.0259013800. The cubic root of 40335530 is about 342.9487750287.

Adding to 40335530 its reverse (3553304), we get a palindrome (43888834).

The spelling of 40335530 in words is "forty million, three hundred thirty-five thousand, five hundred thirty".