213442224 has 40 divisors (see below), whose sum is σ = 552172992. Its totient is φ = 71046720.

The previous prime is 213442217. The next prime is 213442237. The reversal of 213442224 is 422244312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 213442194 and 213442203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36187 + ... + 41669.

Almost surely, 2^213442224 is an apocalyptic number.

213442224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213442224 is an abundant number, since it is smaller than the sum of its proper divisors (338730768).

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

213442224 is a wasteful number, since it uses less digits than its factorization.

213442224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305 (or 6299 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 213442224 is about 14609.6620084107. The cubic root of 213442224 is about 597.6222787384.

Adding to 213442224 its reverse (422244312), we get a palindrome (635686536).

The spelling of 213442224 in words is "two hundred thirteen million, four hundred forty-two thousand, two hundred twenty-four".