40433218 has 32 divisors (see below), whose sum is σ = 72806400. Its totient is φ = 16465680.

The previous prime is 40433203. The next prime is 40433219. The reversal of 40433218 is 81233404.

It is a junction number, because it is equal to n+sod(n) for n = 40433192 and 40433201.

It is not an unprimeable number, because it can be changed into a prime (40433219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63763 + ... + 64393.

It is an arithmetic number, because the mean of its divisors is an integer number (2275200).

Almost surely, 2^40433218 is an apocalyptic number.

40433218 is a deficient number, since it is larger than the sum of its proper divisors (32373182).

40433218 is a wasteful number, since it uses less digits than its factorization.

40433218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40433218 is about 6358.7119764934. The cubic root of 40433218 is about 343.2254126092.

The spelling of 40433218 in words is "forty million, four hundred thirty-three thousand, two hundred eighteen".