40045382 has 8 divisors (see below), whose sum is σ = 64688736. Its totient is φ = 18482472.

The previous prime is 40045381. The next prime is 40045393. The reversal of 40045382 is 28354004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1540207 = 40045382 / (4 + 0 + 0 + 4 + 5 + 3 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045381) 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 3 ways as a sum of consecutive naturals, for example, 770078 + ... + 770129.

It is an arithmetic number, because the mean of its divisors is an integer number (8086092).

Almost surely, 2^40045382 is an apocalyptic number.

40045382 is a deficient number, since it is larger than the sum of its proper divisors (24643354).

40045382 is a wasteful number, since it uses less digits than its factorization.

40045382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540222.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40045382 is about 6328.1420654091. The cubic root of 40045382 is about 342.1244773338.

Adding to 40045382 its reverse (28354004), we get a palindrome (68399386).

The spelling of 40045382 in words is "forty million, forty-five thousand, three hundred eighty-two".