40168635 has 16 divisors (see below), whose sum is σ = 69213984. Its totient is φ = 19775232.

The previous prime is 40168633. The next prime is 40168651. The reversal of 40168635 is 53686104.

It is not a de Polignac number, because 40168635 - 2¹ = 40168633 is a prime.

It is a super-2 number, since 2×40168635² = 3227038475526450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40168596 and 40168605.

It is not an unprimeable number, because it can be changed into a prime (40168631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102802 + ... + 103191.

It is an arithmetic number, because the mean of its divisors is an integer number (4325874).

Almost surely, 2^40168635 is an apocalyptic number.

40168635 is a deficient number, since it is larger than the sum of its proper divisors (29045349).

40168635 is a wasteful number, since it uses less digits than its factorization.

40168635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206014.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 40168635 is about 6337.8730659425. The cubic root of 40168635 is about 342.4751185150.

The spelling of 40168635 in words is "forty million, one hundred sixty-eight thousand, six hundred thirty-five".