28327737 has 4 divisors (see below), whose sum is σ = 37770320. Its totient is φ = 18885156.

The previous prime is 28327703. The next prime is 28327757. The reversal of 28327737 is 73772382.

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 not a de Polignac number, because 28327737 - 2¹⁰ = 28326713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28327695 and 28327704.

It is not an unprimeable number, because it can be changed into a prime (28327757) 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, 4721287 + ... + 4721292.

It is an arithmetic number, because the mean of its divisors is an integer number (9442580).

Almost surely, 2^28327737 is an apocalyptic number.

It is an amenable number.

28327737 is a deficient number, since it is larger than the sum of its proper divisors (9442583).

28327737 is an equidigital number, since it uses as much as digits as its factorization.

28327737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442582.

The product of its digits is 98784, while the sum is 39.

The square root of 28327737 is about 5322.3807642821. The cubic root of 28327737 is about 304.8390694505.

The spelling of 28327737 in words is "twenty-eight million, three hundred twenty-seven thousand, seven hundred thirty-seven".