28331151 has 16 divisors (see below), whose sum is σ = 39004800. Its totient is φ = 18282528.

The previous prime is 28331143. The next prime is 28331209. The reversal of 28331151 is 15113382.

It is not a de Polignac number, because 28331151 - 2³ = 28331143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331141) 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, 10665 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (2437800).

Almost surely, 2^28331151 is an apocalyptic number.

28331151 is a deficient number, since it is larger than the sum of its proper divisors (10673649).

28331151 is a wasteful number, since it uses less digits than its factorization.

28331151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518.

The product of its digits is 720, while the sum is 24.

The square root of 28331151 is about 5322.7014757546. The cubic root of 28331151 is about 304.8513151490.

It can be divided in two parts, 28331 and 151, that added together give a palindrome (28482).

The spelling of 28331151 in words is "twenty-eight million, three hundred thirty-one thousand, one hundred fifty-one".