40117740 has 96 divisors (see below), whose sum is σ = 127384320. Its totient is φ = 9351936.

The previous prime is 40117709. The next prime is 40117741. The reversal of 40117740 is 4771104.

It is a self number, because there is not a number n which added to its sum of digits gives 40117740.

It is not an unprimeable number, because it can be changed into a prime (40117741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13467 + ... + 16173.

It is an arithmetic number, because the mean of its divisors is an integer number (1326920).

Almost surely, 2^40117740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40117740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63692160).

40117740 is an abundant number, since it is smaller than the sum of its proper divisors (87266580).

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

40117740 is a wasteful number, since it uses less digits than its factorization.

40117740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 40117740 is about 6333.8566450465. The cubic root of 40117740 is about 342.3304149179.

Adding to 40117740 its reverse (4771104), we get a palindrome (44888844).

The spelling of 40117740 in words is "forty million, one hundred seventeen thousand, seven hundred forty".