28471829 has 2 divisors, whose sum is σ = 28471830. Its totient is φ = 28471828.

The previous prime is 28471789. The next prime is 28471841. The reversal of 28471829 is 92817482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 9604 = 5335^2 + 98^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28471829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28471529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14235914 + 14235915.

It is an arithmetic number, because the mean of its divisors is an integer number (14235915).

Almost surely, 2^28471829 is an apocalyptic number.

It is an amenable number.

28471829 is a deficient number, since it is larger than the sum of its proper divisors (1).

28471829 is an equidigital number, since it uses as much as digits as its factorization.

28471829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 28471829 is about 5335.9000178039. The cubic root of 28471829 is about 305.3550608361.

The spelling of 28471829 in words is "twenty-eight million, four hundred seventy-one thousand, eight hundred twenty-nine".