40831856 has 20 divisors (see below), whose sum is σ = 85197672. Its totient is φ = 18845376.

The previous prime is 40831853. The next prime is 40831871. The reversal of 40831856 is 65813804.

40831856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831853) 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 3 ways as a sum of consecutive naturals, for example, 97946 + ... + 98361.

Almost surely, 2^40831856 is an apocalyptic number.

It is an amenable number.

40831856 is an abundant number, since it is smaller than the sum of its proper divisors (44365816).

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

40831856 is a wasteful number, since it uses less digits than its factorization.

40831856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196328 (or 196322 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40831856 is about 6389.9809076397. The cubic root of 40831856 is about 344.3496984715.

The spelling of 40831856 in words is "forty million, eight hundred thirty-one thousand, eight hundred fifty-six".