40393782 has 64 divisors (see below), whose sum is σ = 105477120. Its totient is φ = 11296800.

The previous prime is 40393777. The next prime is 40393783. The reversal of 40393782 is 28739304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40393783) 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, 5107 + ... + 10337.

It is an arithmetic number, because the mean of its divisors is an integer number (1648080).

Almost surely, 2^40393782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40393782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52738560).

40393782 is an abundant number, since it is smaller than the sum of its proper divisors (65083338).

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

40393782 is a wasteful number, since it uses less digits than its factorization.

40393782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 40393782 is about 6355.6102775422. The cubic root of 40393782 is about 343.1137895349.

The spelling of 40393782 in words is "forty million, three hundred ninety-three thousand, seven hundred eighty-two".