211428075 has 54 divisors (see below), whose sum is σ = 370494516. Its totient is φ = 106381440.

The previous prime is 211428073. The next prime is 211428089. The reversal of 211428075 is 570824112.

211428075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211428075 - 2¹ = 211428073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211428073) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2896239 + ... + 2896311.

Almost surely, 2^211428075 is an apocalyptic number.

211428075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

211428075 is a deficient number, since it is larger than the sum of its proper divisors (159066441).

211428075 is an equidigital number, since it uses as much as digits as its factorization.

211428075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 211428075 is about 14540.5665295407. The cubic root of 211428075 is about 595.7365123240.

The spelling of 211428075 in words is "two hundred eleven million, four hundred twenty-eight thousand, seventy-five".