40012168 has 16 divisors (see below), whose sum is σ = 85740480. Its totient is φ = 17148048.

The previous prime is 40012163. The next prime is 40012171. The reversal of 40012168 is 86121004.

It is not an unprimeable number, because it can be changed into a prime (40012163) 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, 357196 + ... + 357307.

It is an arithmetic number, because the mean of its divisors is an integer number (5358780).

Almost surely, 2^40012168 is an apocalyptic number.

It is an amenable number.

40012168 is an abundant number, since it is smaller than the sum of its proper divisors (45728312).

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

40012168 is a wasteful number, since it uses less digits than its factorization.

40012168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714516 (or 714512 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 40012168 is about 6325.5172120547. The cubic root of 40012168 is about 342.0298641318.

The spelling of 40012168 in words is "forty million, twelve thousand, one hundred sixty-eight".