40028817 has 8 divisors (see below), whose sum is σ = 53401024. Its totient is φ = 26671248.

The previous prime is 40028789. The next prime is 40028827. The reversal of 40028817 is 71882004.

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

It is not a de Polignac number, because 40028817 - 2⁷ = 40028689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40028827) 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, 8463 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (6675128).

Almost surely, 2^40028817 is an apocalyptic number.

It is an amenable number.

40028817 is a deficient number, since it is larger than the sum of its proper divisors (13372207).

40028817 is a wasteful number, since it uses less digits than its factorization.

40028817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7319.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 40028817 is about 6326.8330940527. The cubic root of 40028817 is about 342.0772969158.

The spelling of 40028817 in words is "forty million, twenty-eight thousand, eight hundred seventeen".