40782445 has 12 divisors (see below), whose sum is σ = 53793180. Its totient is φ = 29659520.

The previous prime is 40782421. The next prime is 40782451. The reversal of 40782445 is 54428704.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20738916 + 20043529 = 4554^2 + 4477^2 .

It is not a de Polignac number, because 40782445 - 2¹⁹ = 40258157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40782445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33100 + ... + 34309.

It is an arithmetic number, because the mean of its divisors is an integer number (4482765).

Almost surely, 2^40782445 is an apocalyptic number.

It is an amenable number.

40782445 is a deficient number, since it is larger than the sum of its proper divisors (13010735).

40782445 is a wasteful number, since it uses less digits than its factorization.

40782445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67436 (or 67425 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 40782445 is about 6386.1134502920. The cubic root of 40782445 is about 344.2107421725.

The spelling of 40782445 in words is "forty million, seven hundred eighty-two thousand, four hundred forty-five".