28653829 has 2 divisors, whose sum is σ = 28653830. Its totient is φ = 28653828.

The previous prime is 28653809. The next prime is 28653839. The reversal of 28653829 is 92835682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 31329 = 5350^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 28653829 - 2⁵ = 28653797 is a prime.

It is a super-2 number, since 2×28653829² = 1642083832722482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28653809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14326914 + 14326915.

It is an arithmetic number, because the mean of its divisors is an integer number (14326915).

Almost surely, 2^28653829 is an apocalyptic number.

It is an amenable number.

28653829 is a deficient number, since it is larger than the sum of its proper divisors (1).

28653829 is an equidigital number, since it uses as much as digits as its factorization.

28653829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 28653829 is about 5352.9271431620. The cubic root of 28653829 is about 306.0043180788.

The spelling of 28653829 in words is "twenty-eight million, six hundred fifty-three thousand, eight hundred twenty-nine".