28731027 has 16 divisors (see below), whose sum is σ = 41447840. Its totient is φ = 17597952.

The previous prime is 28731011. The next prime is 28731047. The reversal of 28731027 is 72013782.

It is not a de Polignac number, because 28731027 - 2⁴ = 28731011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28730985 and 28731003.

It is not an unprimeable number, because it can be changed into a prime (28731047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7323 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (2590490).

Almost surely, 2^28731027 is an apocalyptic number.

28731027 is a deficient number, since it is larger than the sum of its proper divisors (12716813).

28731027 is a wasteful number, since it uses less digits than its factorization.

28731027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 28731027 is about 5360.1331140187. The cubic root of 28731027 is about 306.2788798532.

The spelling of 28731027 in words is "twenty-eight million, seven hundred thirty-one thousand, twenty-seven".