40816380 has 48 divisors (see below), whose sum is σ = 124677504. Its totient is φ = 9894720.

The previous prime is 40816309. The next prime is 40816387. The reversal of 40816380 is 8361804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40816387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30262 + ... + 31581.

It is an arithmetic number, because the mean of its divisors is an integer number (2597448).

Almost surely, 2^40816380 is an apocalyptic number.

It is an amenable number.

40816380 is an abundant number, since it is smaller than the sum of its proper divisors (83861124).

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

40816380 is a wasteful number, since it uses less digits than its factorization.

40816380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61866 (or 61864 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 40816380 is about 6388.7698346395. The cubic root of 40816380 is about 344.3061880862.

The spelling of 40816380 in words is "forty million, eight hundred sixteen thousand, three hundred eighty".