28051773 has 4 divisors (see below), whose sum is σ = 37402368. Its totient is φ = 18701180.

The previous prime is 28051753. The next prime is 28051799. The reversal of 28051773 is 37715082.

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 28051773 - 2¹⁴ = 28035389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28051753) 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, 4675293 + ... + 4675298.

It is an arithmetic number, because the mean of its divisors is an integer number (9350592).

Almost surely, 2^28051773 is an apocalyptic number.

It is an amenable number.

28051773 is a deficient number, since it is larger than the sum of its proper divisors (9350595).

28051773 is an equidigital number, since it uses as much as digits as its factorization.

28051773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350594.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 28051773 is about 5296.3924514711. The cubic root of 28051773 is about 303.8459406668.

The spelling of 28051773 in words is "twenty-eight million, fifty-one thousand, seven hundred seventy-three".