40428305 has 8 divisors (see below), whose sum is σ = 48616512. Its totient is φ = 32274288.

The previous prime is 40428301. The next prime is 40428359. The reversal of 40428305 is 50382404.

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

It is a cyclic number.

It is not a de Polignac number, because 40428305 - 2² = 40428301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40428301) 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, 5867 + ... + 10736.

It is an arithmetic number, because the mean of its divisors is an integer number (6077064).

Almost surely, 2^40428305 is an apocalyptic number.

It is an amenable number.

40428305 is a deficient number, since it is larger than the sum of its proper divisors (8188207).

40428305 is a wasteful number, since it uses less digits than its factorization.

40428305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17095.

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

The square root of 40428305 is about 6358.3256443815. The cubic root of 40428305 is about 343.2115103869.

The spelling of 40428305 in words is "forty million, four hundred twenty-eight thousand, three hundred five".