28146211 has 8 divisors (see below), whose sum is σ = 29211120. Its totient is φ = 27087648.

The previous prime is 28146191. The next prime is 28146221. The reversal of 28146211 is 11264182.

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

It is a cyclic number.

It is not a de Polignac number, because 28146211 - 2⁵ = 28146179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28146221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8665 + ... + 11461.

It is an arithmetic number, because the mean of its divisors is an integer number (3651390).

Almost surely, 2^28146211 is an apocalyptic number.

28146211 is a deficient number, since it is larger than the sum of its proper divisors (1064909).

28146211 is a wasteful number, since it uses less digits than its factorization.

28146211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its digits is 768, while the sum is 25.

The square root of 28146211 is about 5305.3002742540. The cubic root of 28146211 is about 304.1865306933.

It can be divided in two parts, 2814 and 6211, that added together give a square (9025 = 95²).

The spelling of 28146211 in words is "twenty-eight million, one hundred forty-six thousand, two hundred eleven".