40818816 has 160 divisors (see below), whose sum is σ = 126382080. Its totient is φ = 13063680.

The previous prime is 40818803. The next prime is 40818829. The reversal of 40818816 is 61881804.

It is an interprime number because it is at equal distance from previous prime (40818803) and next prime (40818829).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 321345 + ... + 321471.

It is an arithmetic number, because the mean of its divisors is an integer number (789888).

Almost surely, 2^40818816 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 40818816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63191040).

40818816 is an abundant number, since it is smaller than the sum of its proper divisors (85563264).

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

40818816 is a wasteful number, since it uses less digits than its factorization.

40818816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 40818816 is about 6388.9604788260. The cubic root of 40818816 is about 344.3130375683.

The spelling of 40818816 in words is "forty million, eight hundred eighteen thousand, eight hundred sixteen".