28754773 has 4 divisors (see below), whose sum is σ = 29148748. Its totient is φ = 28360800.

The previous prime is 28754767. The next prime is 28754783. The reversal of 28754773 is 37745782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23746129 + 5008644 = 4873^2 + 2238^2 .

It is a cyclic number.

It is not a de Polignac number, because 28754773 - 2⁹ = 28754261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28754723) 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, 196878 + ... + 197023.

It is an arithmetic number, because the mean of its divisors is an integer number (7287187).

Almost surely, 2^28754773 is an apocalyptic number.

It is an amenable number.

28754773 is a deficient number, since it is larger than the sum of its proper divisors (393975).

28754773 is an equidigital number, since it uses as much as digits as its factorization.

28754773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393974.

The product of its digits is 329280, while the sum is 43.

The square root of 28754773 is about 5362.3477134554. The cubic root of 28754773 is about 306.3632357603.

The spelling of 28754773 in words is "twenty-eight million, seven hundred fifty-four thousand, seven hundred seventy-three".