40428586 has 8 divisors (see below), whose sum is σ = 66155904. Its totient is φ = 18376620.

The previous prime is 40428571. The next prime is 40428587. The reversal of 40428586 is 68582404.

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

It is not an unprimeable number, because it can be changed into a prime (40428587) 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, 918810 + ... + 918853.

It is an arithmetic number, because the mean of its divisors is an integer number (8269488).

Almost surely, 2^40428586 is an apocalyptic number.

40428586 is a deficient number, since it is larger than the sum of its proper divisors (25727318).

40428586 is a wasteful number, since it uses less digits than its factorization.

40428586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837676.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 40428586 is about 6358.3477413555. The cubic root of 40428586 is about 343.2123055576.

It can be divided in two parts, 40428 and 586, that added together give a palindrome (41014).

The spelling of 40428586 in words is "forty million, four hundred twenty-eight thousand, five hundred eighty-six".