40871720 has 16 divisors (see below), whose sum is σ = 91961460. Its totient is φ = 16348672.

The previous prime is 40871707. The next prime is 40871729. The reversal of 40871720 is 2717804.

It can be written as a sum of positive squares in 2 ways, for example, as 38663524 + 2208196 = 6218^2 + 1486^2 .

It is not an unprimeable number, because it can be changed into a prime (40871729) 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, 510857 + ... + 510936.

Almost surely, 2^40871720 is an apocalyptic number.

40871720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40871720 is an abundant number, since it is smaller than the sum of its proper divisors (51089740).

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

40871720 is a wasteful number, since it uses less digits than its factorization.

40871720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021804 (or 1021800 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 40871720 is about 6393.0994048271. The cubic root of 40871720 is about 344.4617244963.

The spelling of 40871720 in words is "forty million, eight hundred seventy-one thousand, seven hundred twenty".