40428147 has 4 divisors (see below), whose sum is σ = 53904200. Its totient is φ = 26952096.

The previous prime is 40428137. The next prime is 40428163. The reversal of 40428147 is 74182404.

40428147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40428147 - 2⁶ = 40428083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40428137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6738022 + ... + 6738027.

It is an arithmetic number, because the mean of its divisors is an integer number (13476050).

Almost surely, 2^40428147 is an apocalyptic number.

40428147 is a deficient number, since it is larger than the sum of its proper divisors (13476053).

40428147 is a wasteful number, since it uses less digits than its factorization.

40428147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13476052.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 40428147 is about 6358.3132197148. The cubic root of 40428147 is about 343.2110632786.

The spelling of 40428147 in words is "forty million, four hundred twenty-eight thousand, one hundred forty-seven".