28604749 has 2 divisors, whose sum is σ = 28604750. Its totient is φ = 28604748.

The previous prime is 28604729. The next prime is 28604753. The reversal of 28604749 is 94740682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 2082249 = 5150^2 + 1443^2 .

It is a cyclic number.

It is not a de Polignac number, because 28604749 - 2¹¹ = 28602701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28604729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302374 + 14302375.

It is an arithmetic number, because the mean of its divisors is an integer number (14302375).

Almost surely, 2^28604749 is an apocalyptic number.

It is an amenable number.

28604749 is a deficient number, since it is larger than the sum of its proper divisors (1).

28604749 is an equidigital number, since it uses as much as digits as its factorization.

28604749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 28604749 is about 5348.3407707438. The cubic root of 28604749 is about 305.8295040359.

The spelling of 28604749 in words is "twenty-eight million, six hundred four thousand, seven hundred forty-nine".