40380784 has 20 divisors (see below), whose sum is σ = 80058616. Its totient is φ = 19720512.

The previous prime is 40380773. The next prime is 40380787. The reversal of 40380784 is 48708304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40380787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28659 + ... + 30034.

Almost surely, 2^40380784 is an apocalyptic number.

It is an amenable number.

40380784 is a deficient number, since it is larger than the sum of its proper divisors (39677832).

40380784 is a wasteful number, since it uses less digits than its factorization.

40380784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58744 (or 58738 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40380784 is about 6354.5876341428. The cubic root of 40380784 is about 343.0769829501.

The spelling of 40380784 in words is "forty million, three hundred eighty thousand, seven hundred eighty-four".