28671611 has 2 divisors, whose sum is σ = 28671612. Its totient is φ = 28671610.

The previous prime is 28671557. The next prime is 28671619. The reversal of 28671611 is 11617682.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28671611 - 2¹⁴ = 28655227 is a prime.

It is a super-2 number, since 2×28671611² = 1644122554670642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28671619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335805 + 14335806.

It is an arithmetic number, because the mean of its divisors is an integer number (14335806).

Almost surely, 2^28671611 is an apocalyptic number.

28671611 is a deficient number, since it is larger than the sum of its proper divisors (1).

28671611 is an equidigital number, since it uses as much as digits as its factorization.

28671611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 28671611 is about 5354.5878459504. The cubic root of 28671611 is about 306.0676050665.

The spelling of 28671611 in words is "twenty-eight million, six hundred seventy-one thousand, six hundred eleven".