28150011 has 20 divisors (see below), whose sum is σ = 44527032. Its totient is φ = 17661888.

The previous prime is 28149973. The next prime is 28150019. The reversal of 28150011 is 11005182.

It is not a de Polignac number, because 28150011 - 2⁷ = 28149883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28150019) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8845 + ... + 11598.

Almost surely, 2^28150011 is an apocalyptic number.

28150011 is a deficient number, since it is larger than the sum of its proper divisors (16377021).

28150011 is a wasteful number, since it uses less digits than its factorization.

28150011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472 (or 20463 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 28150011 is about 5305.6583945821. The cubic root of 28150011 is about 304.2002194133.

Adding to 28150011 its reverse (11005182), we get a palindrome (39155193).

The spelling of 28150011 in words is "twenty-eight million, one hundred fifty thousand, eleven".