213246246 has 16 divisors (see below), whose sum is σ = 426829824. Its totient is φ = 71025864.

The previous prime is 213246239. The next prime is 213246259. The reversal of 213246246 is 642642312.

213246246 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213246246² = 90947922866185032, which contains 22 as substring.

It is a congruent number.

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, 5430 + ... + 21353.

It is an arithmetic number, because the mean of its divisors is an integer number (26676864).

Almost surely, 2^213246246 is an apocalyptic number.

213246246 is an abundant number, since it is smaller than the sum of its proper divisors (213583578).

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

213246246 is a wasteful number, since it uses less digits than its factorization.

213246246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28115.

The product of its digits is 13824, while the sum is 30.

The square root of 213246246 is about 14602.9533314327. The cubic root of 213246246 is about 597.4393148103.

Adding to 213246246 its reverse (642642312), we get a palindrome (855888558).

The spelling of 213246246 in words is "two hundred thirteen million, two hundred forty-six thousand, two hundred forty-six".