40218068 has 12 divisors (see below), whose sum is σ = 76780032. Its totient is φ = 18280920.

The previous prime is 40218037. The next prime is 40218083. The reversal of 40218068 is 86081204.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40218068.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456980 + ... + 457067.

It is an arithmetic number, because the mean of its divisors is an integer number (6398336).

Almost surely, 2^40218068 is an apocalyptic number.

It is an amenable number.

40218068 is a deficient number, since it is larger than the sum of its proper divisors (36561964).

40218068 is a wasteful number, since it uses less digits than its factorization.

40218068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914062 (or 914060 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 40218068 is about 6341.7716767478. The cubic root of 40218068 is about 342.6155484181.

The spelling of 40218068 in words is "forty million, two hundred eighteen thousand, sixty-eight".