40871840 has 48 divisors (see below), whose sum is σ = 96943392. Its totient is φ = 16283904.

The previous prime is 40871833. The next prime is 40871849. The reversal of 40871840 is 4817804.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 40871797 and 40871806.

It is not an unprimeable number, because it can be changed into a prime (40871849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74447 + ... + 74993.

It is an arithmetic number, because the mean of its divisors is an integer number (2019654).

Almost surely, 2^40871840 is an apocalyptic number.

40871840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40871840 is an abundant number, since it is smaller than the sum of its proper divisors (56071552).

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

40871840 is a wasteful number, since it uses less digits than its factorization.

40871840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 40871840 is about 6393.1087899394. The cubic root of 40871840 is about 344.4620616110.

The spelling of 40871840 in words is "forty million, eight hundred seventy-one thousand, eight hundred forty".