40840158 has 32 divisors (see below), whose sum is σ = 86855040. Its totient is φ = 12765600.

The previous prime is 40840117. The next prime is 40840159. The reversal of 40840158 is 85104804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40840159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9741 + ... + 13287.

It is an arithmetic number, because the mean of its divisors is an integer number (2714220).

Almost surely, 2^40840158 is an apocalyptic number.

40840158 is an abundant number, since it is smaller than the sum of its proper divisors (46014882).

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

40840158 is a wasteful number, since it uses less digits than its factorization.

40840158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 40840158 is about 6390.6304853277. The cubic root of 40840158 is about 344.3730348053.

The spelling of 40840158 in words is "forty million, eight hundred forty thousand, one hundred fifty-eight".