28610493 has 4 divisors (see below), whose sum is σ = 38147328. Its totient is φ = 19073660.

The previous prime is 28610431. The next prime is 28610503. The reversal of 28610493 is 39401682.

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 a cyclic number.

It is not a de Polignac number, because 28610493 - 2⁸ = 28610237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28610293) 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, 4768413 + ... + 4768418.

It is an arithmetic number, because the mean of its divisors is an integer number (9536832).

Almost surely, 2^28610493 is an apocalyptic number.

It is an amenable number.

28610493 is a deficient number, since it is larger than the sum of its proper divisors (9536835).

28610493 is an equidigital number, since it uses as much as digits as its factorization.

28610493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536834.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28610493 is about 5348.8777327585. The cubic root of 28610493 is about 305.8499734470.

The spelling of 28610493 in words is "twenty-eight million, six hundred ten thousand, four hundred ninety-three".