28767115 has 8 divisors (see below), whose sum is σ = 37176048. Its totient is φ = 21243360.

The previous prime is 28767113. The next prime is 28767119. The reversal of 28767115 is 51176782.

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

It is not a de Polignac number, because 28767115 - 2¹ = 28767113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28767113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221221 + ... + 221350.

It is an arithmetic number, because the mean of its divisors is an integer number (4647006).

Almost surely, 2^28767115 is an apocalyptic number.

28767115 is a deficient number, since it is larger than the sum of its proper divisors (8408933).

28767115 is a wasteful number, since it uses less digits than its factorization.

28767115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442589.

The product of its digits is 23520, while the sum is 37.

The square root of 28767115 is about 5363.4983919080. The cubic root of 28767115 is about 306.4070614608.

It can be divided in two parts, 28767 and 115, that added together give a palindrome (28882).

The spelling of 28767115 in words is "twenty-eight million, seven hundred sixty-seven thousand, one hundred fifteen".