40685158 has 8 divisors (see below), whose sum is σ = 61800480. Its totient is φ = 20085000.

The previous prime is 40685153. The next prime is 40685159. The reversal of 40685158 is 85158604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40685153) 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, 128593 + ... + 128908.

It is an arithmetic number, because the mean of its divisors is an integer number (7725060).

Almost surely, 2^40685158 is an apocalyptic number.

40685158 is a deficient number, since it is larger than the sum of its proper divisors (21115322).

40685158 is a wasteful number, since it uses less digits than its factorization.

40685158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257582.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 40685158 is about 6378.4918280108. The cubic root of 40685158 is about 343.9368179887.

The spelling of 40685158 in words is "forty million, six hundred eighty-five thousand, one hundred fifty-eight".