28841211 has 16 divisors (see below), whose sum is σ = 48832000. Its totient is φ = 16480584.

The previous prime is 28841209. The next prime is 28841233. The reversal of 28841211 is 11214882.

It is not a de Polignac number, because 28841211 - 2¹ = 28841209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28841711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76111 + ... + 76488.

It is an arithmetic number, because the mean of its divisors is an integer number (3052000).

Almost surely, 2^28841211 is an apocalyptic number.

28841211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28841211 is a deficient number, since it is larger than the sum of its proper divisors (19990789).

28841211 is a wasteful number, since it uses less digits than its factorization.

28841211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152615 (or 152609 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 28841211 is about 5370.4013816474. The cubic root of 28841211 is about 306.6699087296.

It can be divided in two parts, 2884 and 1211, that added together give a triangular number (4095 = T₉₀).

The spelling of 28841211 in words is "twenty-eight million, eight hundred forty-one thousand, two hundred eleven".