28634711 has 4 divisors (see below), whose sum is σ = 32725392. Its totient is φ = 24544032.

The previous prime is 28634693. The next prime is 28634717. The reversal of 28634711 is 11743682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11743682 = 2 ⋅5871841.

It is a cyclic number.

It is not a de Polignac number, because 28634711 - 2¹⁰ = 28633687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634717) 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, 2045330 + ... + 2045343.

It is an arithmetic number, because the mean of its divisors is an integer number (8181348).

Almost surely, 2^28634711 is an apocalyptic number.

28634711 is a deficient number, since it is larger than the sum of its proper divisors (4090681).

28634711 is an equidigital number, since it uses as much as digits as its factorization.

28634711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090680.

The product of its digits is 8064, while the sum is 32.

The square root of 28634711 is about 5351.1410932623. The cubic root of 28634711 is about 305.9362469887.

The spelling of 28634711 in words is "twenty-eight million, six hundred thirty-four thousand, seven hundred eleven".