28327765 has 8 divisors (see below), whose sum is σ = 35782560. Its totient is φ = 21469392.

The previous prime is 28327757. The next prime is 28327787. The reversal of 28327765 is 56772382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28327765 - 2³ = 28327757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148999 + ... + 149188.

It is an arithmetic number, because the mean of its divisors is an integer number (4472820).

Almost surely, 2^28327765 is an apocalyptic number.

It is an amenable number.

28327765 is a deficient number, since it is larger than the sum of its proper divisors (7454795).

28327765 is a wasteful number, since it uses less digits than its factorization.

28327765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298211.

The product of its digits is 141120, while the sum is 40.

The square root of 28327765 is about 5322.3833946833. The cubic root of 28327765 is about 304.8391698879.

It can be divided in two parts, 28327 and 765, that added together give a palindrome (29092).

The spelling of 28327765 in words is "twenty-eight million, three hundred twenty-seven thousand, seven hundred sixty-five".