211826145 has 16 divisors (see below), whose sum is σ = 340407360. Its totient is φ = 112478784.

The previous prime is 211826129. The next prime is 211826149. The reversal of 211826145 is 541628112.

It is not a de Polignac number, because 211826145 - 2⁴ = 211826129 is a prime.

It is a super-2 number, since 2×211826145² = 89740631411122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211826149) 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, 27399 + ... + 34268.

It is an arithmetic number, because the mean of its divisors is an integer number (21275460).

Almost surely, 2^211826145 is an apocalyptic number.

It is an amenable number.

211826145 is a deficient number, since it is larger than the sum of its proper divisors (128581215).

211826145 is a wasteful number, since it uses less digits than its factorization.

211826145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61904.

The product of its digits is 3840, while the sum is 30.

The square root of 211826145 is about 14554.2483488499. The cubic root of 211826145 is about 596.1101557949.

The spelling of 211826145 in words is "two hundred eleven million, eight hundred twenty-six thousand, one hundred forty-five".