211400224 has 24 divisors (see below), whose sum is σ = 475651008. Its totient is φ = 90600000.

The previous prime is 211400183. The next prime is 211400237. The reversal of 211400224 is 422004112.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 211400198 and 211400207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471652 + ... + 472099.

It is an arithmetic number, because the mean of its divisors is an integer number (19818792).

Almost surely, 2^211400224 is an apocalyptic number.

It is an amenable number.

211400224 is an abundant number, since it is smaller than the sum of its proper divisors (264250784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211400224 is an equidigital number, since it uses as much as digits as its factorization.

211400224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943768 (or 943760 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 211400224 is about 14539.6087980385. The cubic root of 211400224 is about 595.7103527798.

Adding to 211400224 its reverse (422004112), we get a palindrome (633404336).

The spelling of 211400224 in words is "two hundred eleven million, four hundred thousand, two hundred twenty-four".