40340310 has 32 divisors (see below), whose sum is σ = 99181152. Its totient is φ = 10494720.

The previous prime is 40340297. The next prime is 40340317. The reversal of 40340310 is 1304304.

It is a super-2 number, since 2×40340310² = 3254681221792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40340310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340317) 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, 15169 + ... + 17628.

It is an arithmetic number, because the mean of its divisors is an integer number (3099411).

Almost surely, 2^40340310 is an apocalyptic number.

40340310 is an abundant number, since it is smaller than the sum of its proper divisors (58840842).

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

40340310 is a wasteful number, since it uses less digits than its factorization.

40340310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32848.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40340310 is about 6351.4022073870. The cubic root of 40340310 is about 342.9623216495.

Adding to 40340310 its reverse (1304304), we get a palindrome (41644614).

The spelling of 40340310 in words is "forty million, three hundred forty thousand, three hundred ten".