28145514 has 16 divisors (see below), whose sum is σ = 58738752. Its totient is φ = 8973888.

The previous prime is 28145497. The next prime is 28145519. The reversal of 28145514 is 41554182.

It is not an unprimeable number, because it can be changed into a prime (28145519) 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, 101839 + ... + 102114.

It is an arithmetic number, because the mean of its divisors is an integer number (3671172).

Almost surely, 2^28145514 is an apocalyptic number.

28145514 is an abundant number, since it is smaller than the sum of its proper divisors (30593238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28145514 is a wasteful number, since it uses less digits than its factorization.

28145514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203981.

The product of its digits is 6400, while the sum is 30.

The square root of 28145514 is about 5305.2345848228. The cubic root of 28145514 is about 304.1840197602.

Adding to 28145514 its reverse (41554182), we get a palindrome (69699696).

The spelling of 28145514 in words is "twenty-eight million, one hundred forty-five thousand, five hundred fourteen".