28841811 has 8 divisors (see below), whose sum is σ = 39696384. Its totient is φ = 18607560.

The previous prime is 28841783. The next prime is 28841821. The reversal of 28841811 is 11814882.

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

It is not a de Polignac number, because 28841811 - 2⁵ = 28841779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28841821) 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 in 7 ways as a sum of consecutive naturals, for example, 154971 + ... + 155156.

It is an arithmetic number, because the mean of its divisors is an integer number (4962048).

Almost surely, 2^28841811 is an apocalyptic number.

28841811 is a deficient number, since it is larger than the sum of its proper divisors (10854573).

28841811 is a wasteful number, since it uses less digits than its factorization.

28841811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310161.

The product of its digits is 4096, while the sum is 33.

The square root of 28841811 is about 5370.4572431032. The cubic root of 28841811 is about 306.6720353240.

The spelling of 28841811 in words is "twenty-eight million, eight hundred forty-one thousand, eight hundred eleven".