40831878 has 16 divisors (see below), whose sum is σ = 82457856. Its totient is φ = 13478280.

The previous prime is 40831873. The next prime is 40831883. The reversal of 40831878 is 87813804.

40831878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40831873) and next prime (40831883).

It is a super-2 number, since 2×40831878² = 3334484522013768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32418 + ... + 33653.

It is an arithmetic number, because the mean of its divisors is an integer number (5153616).

Almost surely, 2^40831878 is an apocalyptic number.

40831878 is an abundant number, since it is smaller than the sum of its proper divisors (41625978).

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

40831878 is a wasteful number, since it uses less digits than its factorization.

40831878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66179.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 40831878 is about 6389.9826290844. The cubic root of 40831878 is about 344.3497603161.

The spelling of 40831878 in words is "forty million, eight hundred thirty-one thousand, eight hundred seventy-eight".