40168156 has 24 divisors (see below), whose sum is σ = 80650080. Its totient is φ = 17147712.

The previous prime is 40168153. The next prime is 40168159. The reversal of 40168156 is 65186104.

It is an interprime number because it is at equal distance from previous prime (40168153) and next prime (40168159).

It is a super-2 number, since 2×40168156² = 3226961512880672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40168153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4866 + ... + 10198.

It is an arithmetic number, because the mean of its divisors is an integer number (3360420).

Almost surely, 2^40168156 is an apocalyptic number.

It is an amenable number.

40168156 is an abundant number, since it is smaller than the sum of its proper divisors (40481924).

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

40168156 is a wasteful number, since it uses less digits than its factorization.

40168156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613 (or 5611 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 40168156 is about 6337.8352771274. The cubic root of 40168156 is about 342.4737572022.

The spelling of 40168156 in words is "forty million, one hundred sixty-eight thousand, one hundred fifty-six".