212620156 has 48 divisors (see below), whose sum is σ = 451749312. Its totient is φ = 85478400.

The previous prime is 212620147. The next prime is 212620159. The reversal of 212620156 is 651026212.

It is a self number, because there is not a number n which added to its sum of digits gives 212620156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212620159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199866 + ... + 200926.

It is an arithmetic number, because the mean of its divisors is an integer number (9411444).

Almost surely, 2^212620156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212620156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225874656).

212620156 is an abundant number, since it is smaller than the sum of its proper divisors (239129156).

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

212620156 is a wasteful number, since it uses less digits than its factorization.

212620156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 212620156 is about 14581.5004714878. The cubic root of 212620156 is about 596.8540486273.

Adding to 212620156 its reverse (651026212), we get a palindrome (863646368).

The spelling of 212620156 in words is "two hundred twelve million, six hundred twenty thousand, one hundred fifty-six".