40713240 has 64 divisors (see below), whose sum is σ = 122974560. Its totient is φ = 10782720.

The previous prime is 40713227. The next prime is 40713241. The reversal of 40713240 is 4231704.

It is a super-2 number, since 2×40713240² = 3315135822595200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40713241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17760 + ... + 19920.

Almost surely, 2^40713240 is an apocalyptic number.

40713240 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 40713240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61487280).

40713240 is an abundant number, since it is smaller than the sum of its proper divisors (82261320).

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

40713240 is a wasteful number, since it uses less digits than its factorization.

40713240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40713240 is about 6380.6927523585. The cubic root of 40713240 is about 344.0159312975.

Adding to 40713240 its reverse (4231704), we get a palindrome (44944944).

The spelling of 40713240 in words is "forty million, seven hundred thirteen thousand, two hundred forty".