28973713 has 2 divisors, whose sum is σ = 28973714. Its totient is φ = 28973712.

The previous prime is 28973699. The next prime is 28973741. The reversal of 28973713 is 31737982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16064064 + 12909649 = 4008^2 + 3593^2 .

It is a cyclic number.

It is not a de Polignac number, because 28973713 - 2⁹ = 28973201 is a prime.

It is not a weakly prime, because it can be changed into another prime (28973753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14486856 + 14486857.

It is an arithmetic number, because the mean of its divisors is an integer number (14486857).

Almost surely, 2^28973713 is an apocalyptic number.

It is an amenable number.

28973713 is a deficient number, since it is larger than the sum of its proper divisors (1).

28973713 is an equidigital number, since it uses as much as digits as its factorization.

28973713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 28973713 is about 5382.7235671173. The cubic root of 28973713 is about 307.1388246296.

The spelling of 28973713 in words is "twenty-eight million, nine hundred seventy-three thousand, seven hundred thirteen".