28782671 has 2 divisors, whose sum is σ = 28782672. Its totient is φ = 28782670.

The previous prime is 28782661. The next prime is 28782727. The reversal of 28782671 is 17628782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28782671 - 2¹⁰ = 28781647 is a prime.

It is a super-3 number, since 3×28782671³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28782641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14391335 + 14391336.

It is an arithmetic number, because the mean of its divisors is an integer number (14391336).

Almost surely, 2^28782671 is an apocalyptic number.

28782671 is a deficient number, since it is larger than the sum of its proper divisors (1).

28782671 is an equidigital number, since it uses as much as digits as its factorization.

28782671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 41.

The square root of 28782671 is about 5364.9483688103. The cubic root of 28782671 is about 306.4622820294.

The spelling of 28782671 in words is "twenty-eight million, seven hundred eighty-two thousand, six hundred seventy-one".