213642268 has 12 divisors (see below), whose sum is σ = 427284592. Its totient is φ = 91560960.

The previous prime is 213642259. The next prime is 213642269. The reversal of 213642268 is 862246312.

213642268 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213642269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815013 + ... + 3815068.

Almost surely, 2^213642268 is an apocalyptic number.

213642268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213642268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213642268 is a wasteful number, since it uses less digits than its factorization.

213642268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630092 (or 7630090 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 213642268 is about 14616.5066961980. The cubic root of 213642268 is about 597.8089231920.

It can be divided in two parts, 21364 and 2268, that added together give a palindrome (23632).

The spelling of 213642268 in words is "two hundred thirteen million, six hundred forty-two thousand, two hundred sixty-eight".