28501106 has 4 divisors (see below), whose sum is σ = 42751662. Its totient is φ = 14250552.

The previous prime is 28501103. The next prime is 28501127. The reversal of 28501106 is 60110582.

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

It can be written as a sum of positive squares in only one way, i.e., 24910081 + 3591025 = 4991^2 + 1895^2 .

It is not an unprimeable number, because it can be changed into a prime (28501103) 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, 7125275 + ... + 7125278.

Almost surely, 2^28501106 is an apocalyptic number.

28501106 is a deficient number, since it is larger than the sum of its proper divisors (14250556).

28501106 is a wasteful number, since it uses less digits than its factorization.

28501106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14250555.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 28501106 is about 5338.6427114015. The cubic root of 28501106 is about 305.4596884388.

Adding to 28501106 its reverse (60110582), we get a palindrome (88611688).

The spelling of 28501106 in words is "twenty-eight million, five hundred one thousand, one hundred six".