40711440 has 160 divisors (see below), whose sum is σ = 157418496. Its totient is φ = 8455680.

The previous prime is 40711439. The next prime is 40711441. The reversal of 40711440 is 4411704.

It is an interprime number because it is at equal distance from previous prime (40711439) and next prime (40711441).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40711441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17379 + ... + 19581.

Almost surely, 2^40711440 is an apocalyptic number.

40711440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40711440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78709248).

40711440 is an abundant number, since it is smaller than the sum of its proper divisors (116707056).

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

40711440 is a wasteful number, since it uses less digits than its factorization.

40711440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 40711440 is about 6380.5517002842. The cubic root of 40711440 is about 344.0108613841.

The spelling of 40711440 in words is "forty million, seven hundred eleven thousand, four hundred forty".