28152518 has 4 divisors (see below), whose sum is σ = 42228780. Its totient is φ = 14076258.

The previous prime is 28152511. The next prime is 28152563. The reversal of 28152518 is 81525182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7038128 + ... + 7038131.

It is an arithmetic number, because the mean of its divisors is an integer number (10557195).

Almost surely, 2^28152518 is an apocalyptic number.

28152518 is a deficient number, since it is larger than the sum of its proper divisors (14076262).

28152518 is a wasteful number, since it uses less digits than its factorization.

28152518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14076261.

The product of its digits is 6400, while the sum is 32.

The square root of 28152518 is about 5305.8946465229. The cubic root of 28152518 is about 304.2092496917.

The spelling of 28152518 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred eighteen".