40256340 has 96 divisors (see below), whose sum is σ = 121492224. Its totient is φ = 9922560.

The previous prime is 40256339. The next prime is 40256353. The reversal of 40256340 is 4365204.

It is a self number, because there is not a number n which added to its sum of digits gives 40256340.

It is a congruent number.

It is an unprimeable number.

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, 61897 + ... + 62543.

It is an arithmetic number, because the mean of its divisors is an integer number (1265544).

Almost surely, 2^40256340 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 40256340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60746112).

40256340 is an abundant number, since it is smaller than the sum of its proper divisors (81235884).

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

40256340 is a wasteful number, since it uses less digits than its factorization.

40256340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40256340 is about 6344.7884125477. The cubic root of 40256340 is about 342.7241929963.

The spelling of 40256340 in words is "forty million, two hundred fifty-six thousand, three hundred forty".