28945211 has 8 divisors (see below), whose sum is σ = 29795040. Its totient is φ = 28099008.

The previous prime is 28945199. The next prime is 28945249. The reversal of 28945211 is 11254982.

28945211 is nontrivially palindromic in base 2.

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 28945211 - 2²² = 24750907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28945291) 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, 29450 + ... + 30416.

It is an arithmetic number, because the mean of its divisors is an integer number (3724380).

Almost surely, 2^28945211 is an apocalyptic number.

28945211 is a deficient number, since it is larger than the sum of its proper divisors (849829).

28945211 is an equidigital number, since it uses as much as digits as its factorization.

28945211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its digits is 5760, while the sum is 32.

The square root of 28945211 is about 5380.0753712193. The cubic root of 28945211 is about 307.0380787931.

The spelling of 28945211 in words is "twenty-eight million, nine hundred forty-five thousand, two hundred eleven".