28868743 has 4 divisors (see below), whose sum is σ = 28879600. Its totient is φ = 28857888.

The previous prime is 28868711. The next prime is 28868761. The reversal of 28868743 is 34786882.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28868743 - 2⁵ = 28868711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28868693 and 28868702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558 + ... + 7756.

It is an arithmetic number, because the mean of its divisors is an integer number (7219900).

Almost surely, 2^28868743 is an apocalyptic number.

28868743 is a deficient number, since it is larger than the sum of its proper divisors (10857).

28868743 is an equidigital number, since it uses as much as digits as its factorization.

28868743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856.

The product of its digits is 516096, while the sum is 46.

The square root of 28868743 is about 5372.9640795375. The cubic root of 28868743 is about 306.7674606979.

The spelling of 28868743 in words is "twenty-eight million, eight hundred sixty-eight thousand, seven hundred forty-three".