28064929 has 4 divisors (see below), whose sum is σ = 28116784. Its totient is φ = 28013076.

The previous prime is 28064921. The next prime is 28064963. The reversal of 28064929 is 92946082.

28064929 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28064929 - 2³ = 28064921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28064891 and 28064900.

It is not an unprimeable number, because it can be changed into a prime (28064921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25107 + ... + 26200.

It is an arithmetic number, because the mean of its divisors is an integer number (7029196).

Almost surely, 2^28064929 is an apocalyptic number.

It is an amenable number.

28064929 is a deficient number, since it is larger than the sum of its proper divisors (51855).

28064929 is an equidigital number, since it uses as much as digits as its factorization.

28064929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51854.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28064929 is about 5297.6342833382. The cubic root of 28064929 is about 303.8934334753.

The spelling of 28064929 in words is "twenty-eight million, sixty-four thousand, nine hundred twenty-nine".