40791816 has 128 divisors (see below), whose sum is σ = 124320000. Its totient is φ = 12317184.

The previous prime is 40791809. The next prime is 40791827. The reversal of 40791816 is 61819704.

40791816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204885 + ... + 205083.

It is an arithmetic number, because the mean of its divisors is an integer number (971250).

Almost surely, 2^40791816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40791816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62160000).

40791816 is an abundant number, since it is smaller than the sum of its proper divisors (83528184).

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

40791816 is a wasteful number, since it uses less digits than its factorization.

40791816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 40791816 is about 6386.8471094899. The cubic root of 40791816 is about 344.2371044291.

The spelling of 40791816 in words is "forty million, seven hundred ninety-one thousand, eight hundred sixteen".