28858413 has 4 divisors (see below), whose sum is σ = 38477888. Its totient is φ = 19238940.

The previous prime is 28858411. The next prime is 28858421. The reversal of 28858413 is 31485882.

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 28858413 - 2¹ = 28858411 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 (28858411) 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, 4809733 + ... + 4809738.

It is an arithmetic number, because the mean of its divisors is an integer number (9619472).

Almost surely, 2^28858413 is an apocalyptic number.

It is an amenable number.

28858413 is a deficient number, since it is larger than the sum of its proper divisors (9619475).

28858413 is an equidigital number, since it uses as much as digits as its factorization.

28858413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619474.

The product of its digits is 61440, while the sum is 39.

The square root of 28858413 is about 5372.0026991803. The cubic root of 28858413 is about 306.7308664949.

The spelling of 28858413 in words is "twenty-eight million, eight hundred fifty-eight thousand, four hundred thirteen".