28927541 has 4 divisors (see below), whose sum is σ = 28940352. Its totient is φ = 28914732.

The previous prime is 28927501. The next prime is 28927543. The reversal of 28927541 is 14572982.

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 28927541 - 2¹⁰ = 28926517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28927495 and 28927504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28927543) 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, 2015 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (7235088).

Almost surely, 2^28927541 is an apocalyptic number.

It is an amenable number.

28927541 is a deficient number, since it is larger than the sum of its proper divisors (12811).

28927541 is an equidigital number, since it uses as much as digits as its factorization.

28927541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12810.

The product of its digits is 40320, while the sum is 38.

The square root of 28927541 is about 5378.4329502189. The cubic root of 28927541 is about 306.9755875434.

The spelling of 28927541 in words is "twenty-eight million, nine hundred twenty-seven thousand, five hundred forty-one".