28797941 has 4 divisors (see below), whose sum is σ = 28808832. Its totient is φ = 28787052.

The previous prime is 28797919. The next prime is 28797947. The reversal of 28797941 is 14979782.

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, 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 28797941 - 2¹⁰ = 28796917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28797947) 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, 1340 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (7202208).

Almost surely, 2^28797941 is an apocalyptic number.

It is an amenable number.

28797941 is a deficient number, since it is larger than the sum of its proper divisors (10891).

28797941 is an equidigital number, since it uses as much as digits as its factorization.

28797941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10890.

The product of its digits is 254016, while the sum is 47.

The square root of 28797941 is about 5366.3713065721. The cubic root of 28797941 is about 306.5164680096.

The spelling of 28797941 in words is "twenty-eight million, seven hundred ninety-seven thousand, nine hundred forty-one".