28773361 has 4 divisors (see below), whose sum is σ = 29120112. Its totient is φ = 28426612.

The previous prime is 28773343. The next prime is 28773373. The reversal of 28773361 is 16337782.

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 28773361 - 2¹⁹ = 28249073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28773361.

It is not an unprimeable number, because it can be changed into a prime (28773331) 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, 173251 + ... + 173416.

It is an arithmetic number, because the mean of its divisors is an integer number (7280028).

Almost surely, 2^28773361 is an apocalyptic number.

It is an amenable number.

28773361 is a deficient number, since it is larger than the sum of its proper divisors (346751).

28773361 is an equidigital number, since it uses as much as digits as its factorization.

28773361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346750.

The product of its digits is 42336, while the sum is 37.

The square root of 28773361 is about 5364.0806295208. The cubic root of 28773361 is about 306.4292358546.

The spelling of 28773361 in words is "twenty-eight million, seven hundred seventy-three thousand, three hundred sixty-one".