40788815 has 8 divisors (see below), whose sum is σ = 49321008. Its totient is φ = 32381440.

The previous prime is 40788767. The next prime is 40788817. The reversal of 40788815 is 51888704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40788815 - 2¹⁸ = 40526671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40788817) 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, 30482 + ... + 31791.

It is an arithmetic number, because the mean of its divisors is an integer number (6165126).

Almost surely, 2^40788815 is an apocalyptic number.

40788815 is a deficient number, since it is larger than the sum of its proper divisors (8532193).

40788815 is a wasteful number, since it uses less digits than its factorization.

40788815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62409.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 40788815 is about 6386.6121692177. The cubic root of 40788815 is about 344.2286625325.

The spelling of 40788815 in words is "forty million, seven hundred eighty-eight thousand, eight hundred fifteen".