40256992 has 48 divisors (see below), whose sum is σ = 83825280. Its totient is φ = 18992512.

The previous prime is 40256989. The next prime is 40257013. The reversal of 40256992 is 29965204.

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 7 ways as a sum of consecutive naturals, for example, 60759 + ... + 61417.

It is an arithmetic number, because the mean of its divisors is an integer number (1746360).

Almost surely, 2^40256992 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 40256992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41912640).

40256992 is an abundant number, since it is smaller than the sum of its proper divisors (43568288).

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

40256992 is a wasteful number, since it uses less digits than its factorization.

40256992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 40256992 is about 6344.8397930917. The cubic root of 40256992 is about 342.7260432636.

The spelling of 40256992 in words is "forty million, two hundred fifty-six thousand, nine hundred ninety-two".