28973051 has 4 divisors (see below), whose sum is σ = 28990152. Its totient is φ = 28955952.

The previous prime is 28973039. The next prime is 28973057. The reversal of 28973051 is 15037982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28973051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28973057) 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, 5690 + ... + 9503.

It is an arithmetic number, because the mean of its divisors is an integer number (7247538).

Almost surely, 2^28973051 is an apocalyptic number.

28973051 is a deficient number, since it is larger than the sum of its proper divisors (17101).

28973051 is a wasteful number, since it uses less digits than its factorization.

28973051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17100.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28973051 is about 5382.6620737327. The cubic root of 28973051 is about 307.1364854121.

The spelling of 28973051 in words is "twenty-eight million, nine hundred seventy-three thousand, fifty-one".