28176013 has 2 divisors, whose sum is σ = 28176014. Its totient is φ = 28176012.

The previous prime is 28176011. The next prime is 28176037. The reversal of 28176013 is 31067182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 12981609 = 3898^2 + 3603^2 .

It is a cyclic number.

It is not a de Polignac number, because 28176013 - 2¹ = 28176011 is a prime.

Together with 28176011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28176011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14088006 + 14088007.

It is an arithmetic number, because the mean of its divisors is an integer number (14088007).

Almost surely, 2^28176013 is an apocalyptic number.

It is an amenable number.

28176013 is a deficient number, since it is larger than the sum of its proper divisors (1).

28176013 is an equidigital number, since it uses as much as digits as its factorization.

28176013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28176013 is about 5308.1082317526. The cubic root of 28176013 is about 304.2938532421.

The spelling of 28176013 in words is "twenty-eight million, one hundred seventy-six thousand, thirteen".