212261396 has 24 divisors (see below), whose sum is σ = 381405024. Its totient is φ = 103319840.

The previous prime is 212261389. The next prime is 212261531. The reversal of 212261396 is 693162212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23951 + ... + 31593.

It is an arithmetic number, because the mean of its divisors is an integer number (15891876).

Almost surely, 2^212261396 is an apocalyptic number.

It is an amenable number.

212261396 is a deficient number, since it is larger than the sum of its proper divisors (169143628).

212261396 is a wasteful number, since it uses less digits than its factorization.

212261396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831 (or 7829 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 212261396 is about 14569.1933887913. The cubic root of 212261396 is about 596.5181634037.

It can be divided in two parts, 21226 and 1396, that added together give a palindrome (22622).

The spelling of 212261396 in words is "two hundred twelve million, two hundred sixty-one thousand, three hundred ninety-six".