40784146 has 16 divisors (see below), whose sum is σ = 69350400. Its totient is φ = 17832528.

The previous prime is 40784141. The next prime is 40784147. The reversal of 40784146 is 64148704.

It is not an unprimeable number, because it can be changed into a prime (40784141) by changing a digit.

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, 40786 + ... + 41773.

It is an arithmetic number, because the mean of its divisors is an integer number (4334400).

Almost surely, 2^40784146 is an apocalyptic number.

40784146 is a deficient number, since it is larger than the sum of its proper divisors (28566254).

40784146 is a wasteful number, since it uses less digits than its factorization.

40784146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82593.

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

The square root of 40784146 is about 6386.2466284978. The cubic root of 40784146 is about 344.2155276820.

The spelling of 40784146 in words is "forty million, seven hundred eighty-four thousand, one hundred forty-six".