40290168 has 16 divisors (see below), whose sum is σ = 100725480. Its totient is φ = 13430048.

The previous prime is 40290163. The next prime is 40290169. The reversal of 40290168 is 86109204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40290163) 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, 839355 + ... + 839402.

Almost surely, 2^40290168 is an apocalyptic number.

It is an amenable number.

40290168 is an abundant number, since it is smaller than the sum of its proper divisors (60435312).

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

40290168 is a wasteful number, since it uses less digits than its factorization.

40290168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678766 (or 1678762 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 40290168 is about 6347.4536626903. The cubic root of 40290168 is about 342.8201648612.

The spelling of 40290168 in words is "forty million, two hundred ninety thousand, one hundred sixty-eight".