213802224 has 20 divisors (see below), whose sum is σ = 552322536. Its totient is φ = 71267392.

The previous prime is 213802207. The next prime is 213802241. The reversal of 213802224 is 422208312.

It is an interprime number because it is at equal distance from previous prime (213802207) and next prime (213802241).

It is a super-2 number, since 2×213802224² = 91422781974692352, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 213802194 and 213802203.

It is a congruent number.

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, 2227059 + ... + 2227154.

Almost surely, 2^213802224 is an apocalyptic number.

213802224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213802224 is an abundant number, since it is smaller than the sum of its proper divisors (338520312).

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

213802224 is a wasteful number, since it uses less digits than its factorization.

213802224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454224 (or 4454218 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 213802224 is about 14621.9774312505. The cubic root of 213802224 is about 597.9580810502.

The spelling of 213802224 in words is "two hundred thirteen million, eight hundred two thousand, two hundred twenty-four".