40020068 has 12 divisors (see below), whose sum is σ = 76402032. Its totient is φ = 18190920.

The previous prime is 40020067. The next prime is 40020083. The reversal of 40020068 is 86002004.

It is not an unprimeable number, because it can be changed into a prime (40020067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454730 + ... + 454817.

It is an arithmetic number, because the mean of its divisors is an integer number (6366836).

Almost surely, 2^40020068 is an apocalyptic number.

It is an amenable number.

40020068 is a deficient number, since it is larger than the sum of its proper divisors (36381964).

40020068 is a wasteful number, since it uses less digits than its factorization.

40020068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909562 (or 909560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40020068 is about 6326.1416361002. The cubic root of 40020068 is about 342.0523727689.

The spelling of 40020068 in words is "forty million, twenty thousand, sixty-eight".