28479161 has 2 divisors, whose sum is σ = 28479162. Its totient is φ = 28479160.

The previous prime is 28479137. The next prime is 28479163. The reversal of 28479161 is 16197482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15555136 + 12924025 = 3944^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 28479161 - 2¹⁸ = 28217017 is a prime.

It is a super-2 number, since 2×28479161² = 1622125222527842, which contains 22 as substring.

Together with 28479163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28479163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14239580 + 14239581.

It is an arithmetic number, because the mean of its divisors is an integer number (14239581).

Almost surely, 2^28479161 is an apocalyptic number.

It is an amenable number.

28479161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28479161 is an equidigital number, since it uses as much as digits as its factorization.

28479161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 28479161 is about 5336.5870179357. The cubic root of 28479161 is about 305.3812700311.

The spelling of 28479161 in words is "twenty-eight million, four hundred seventy-nine thousand, one hundred sixty-one".