213770224 has 20 divisors (see below), whose sum is σ = 414589536. Its totient is φ = 106779392.

The previous prime is 213770209. The next prime is 213770239. The reversal of 213770224 is 422077312.

It is an interprime number because it is at equal distance from previous prime (213770209) and next prime (213770239).

It is a junction number, because it is equal to n+sod(n) for n = 213770192 and 213770201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11592 + ... + 23704.

Almost surely, 2^213770224 is an apocalyptic number.

It is an amenable number.

213770224 is a deficient number, since it is larger than the sum of its proper divisors (200819312).

213770224 is a wasteful number, since it uses less digits than its factorization.

213770224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224 (or 13218 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 213770224 is about 14620.8831470606. The cubic root of 213770224 is about 597.9282472269.

It can be divided in two parts, 2137 and 70224, that added together give a square (72361 = 269²).

The spelling of 213770224 in words is "two hundred thirteen million, seven hundred seventy thousand, two hundred twenty-four".