28816941 has 4 divisors (see below), whose sum is σ = 38422592. Its totient is φ = 19211292.

The previous prime is 28816937. The next prime is 28816943. The reversal of 28816941 is 14961882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28816941 - 2² = 28816937 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 28816941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816943) 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, 4802821 + ... + 4802826.

It is an arithmetic number, because the mean of its divisors is an integer number (9605648).

Almost surely, 2^28816941 is an apocalyptic number.

It is an amenable number.

28816941 is a deficient number, since it is larger than the sum of its proper divisors (9605651).

28816941 is an equidigital number, since it uses as much as digits as its factorization.

28816941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605650.

The product of its digits is 27648, while the sum is 39.

The square root of 28816941 is about 5368.1412984384. The cubic root of 28816941 is about 306.5838632512.

The spelling of 28816941 in words is "twenty-eight million, eight hundred sixteen thousand, nine hundred forty-one".