28717941 has 8 divisors (see below), whose sum is σ = 43760704. Its totient is φ = 16410240.

The previous prime is 28717939. The next prime is 28717943. The reversal of 28717941 is 14971782.

It is an interprime number because it is at equal distance from previous prime (28717939) and next prime (28717943).

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

It is not a de Polignac number, because 28717941 - 2¹ = 28717939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28717941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28717943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683740 + ... + 683781.

It is an arithmetic number, because the mean of its divisors is an integer number (5470088).

Almost surely, 2^28717941 is an apocalyptic number.

28717941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28717941 is a deficient number, since it is larger than the sum of its proper divisors (15042763).

28717941 is a wasteful number, since it uses less digits than its factorization.

28717941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367531.

The product of its digits is 28224, while the sum is 39.

The square root of 28717941 is about 5358.9122963527. The cubic root of 28717941 is about 306.2323729407.

The spelling of 28717941 in words is "twenty-eight million, seven hundred seventeen thousand, nine hundred forty-one".