213622156 has 12 divisors (see below), whose sum is σ = 407824200. Its totient is φ = 97100960.

The previous prime is 213622121. The next prime is 213622217. The reversal of 213622156 is 651226312.

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, 2427481 + ... + 2427568.

It is an arithmetic number, because the mean of its divisors is an integer number (33985350).

Almost surely, 2^213622156 is an apocalyptic number.

It is an amenable number.

213622156 is a deficient number, since it is larger than the sum of its proper divisors (194202044).

213622156 is a wasteful number, since it uses less digits than its factorization.

213622156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4855064 (or 4855062 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 213622156 is about 14615.8186907200. The cubic root of 213622156 is about 597.7901636233.

Adding to 213622156 its reverse (651226312), we get a palindrome (864848468).

The spelling of 213622156 in words is "two hundred thirteen million, six hundred twenty-two thousand, one hundred fifty-six".