40217816 has 32 divisors (see below), whose sum is σ = 78427440. Its totient is φ = 19317888.

The previous prime is 40217797. The next prime is 40217833. The reversal of 40217816 is 61871204.

40217816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23750 + ... + 25386.

Almost surely, 2^40217816 is an apocalyptic number.

It is an amenable number.

40217816 is a deficient number, since it is larger than the sum of its proper divisors (38209624).

40217816 is a wasteful number, since it uses less digits than its factorization.

40217816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 40217816 is about 6341.7518084517. The cubic root of 40217816 is about 342.6148328251.

The spelling of 40217816 in words is "forty million, two hundred seventeen thousand, eight hundred sixteen".