28696049 has 4 divisors (see below), whose sum is σ = 29621760. Its totient is φ = 27770340.

The previous prime is 28696037. The next prime is 28696067. The reversal of 28696049 is 94069682.

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 28696049 - 2¹² = 28691953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28696949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462809 + ... + 462870.

It is an arithmetic number, because the mean of its divisors is an integer number (7405440).

Almost surely, 2^28696049 is an apocalyptic number.

It is an amenable number.

28696049 is a deficient number, since it is larger than the sum of its proper divisors (925711).

28696049 is an equidigital number, since it uses as much as digits as its factorization.

28696049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925710.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 28696049 is about 5356.8693282551. The cubic root of 28696049 is about 306.1545383988.

The spelling of 28696049 in words is "twenty-eight million, six hundred ninety-six thousand, forty-nine".