28052671 has 4 divisors (see below), whose sum is σ = 28528200. Its totient is φ = 27577144.

The previous prime is 28052653. The next prime is 28052681. The reversal of 28052671 is 17625082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28052671 - 2⁵ = 28052639 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 (28052681) 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, 237676 + ... + 237793.

It is an arithmetic number, because the mean of its divisors is an integer number (7132050).

Almost surely, 2^28052671 is an apocalyptic number.

28052671 is a deficient number, since it is larger than the sum of its proper divisors (475529).

28052671 is an equidigital number, since it uses as much as digits as its factorization.

28052671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475528.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28052671 is about 5296.4772254773. The cubic root of 28052671 is about 303.8491828950.

It can be divided in two parts, 2805 and 2671, that added together give a square (5476 = 74²).

The spelling of 28052671 in words is "twenty-eight million, fifty-two thousand, six hundred seventy-one".