40815340 has 24 divisors (see below), whose sum is σ = 89439840. Its totient is φ = 15616128.

The previous prime is 40815331. The next prime is 40815347. The reversal of 40815340 is 4351804.

It is not an unprimeable number, because it can be changed into a prime (40815347) 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, 43905 + ... + 44824.

It is an arithmetic number, because the mean of its divisors is an integer number (3726660).

Almost surely, 2^40815340 is an apocalyptic number.

It is an amenable number.

40815340 is an abundant number, since it is smaller than the sum of its proper divisors (48624500).

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

40815340 is a wasteful number, since it uses less digits than its factorization.

40815340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88761 (or 88759 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40815340 is about 6388.6884413000. The cubic root of 40815340 is about 344.3032637580.

The spelling of 40815340 in words is "forty million, eight hundred fifteen thousand, three hundred forty".