212028700 has 72 divisors (see below), whose sum is σ = 507151568. Its totient is φ = 76446720.

The previous prime is 212028689. The next prime is 212028701. The reversal of 212028700 is 7820212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212028701) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 54004 + ... + 57796.

Almost surely, 2^212028700 is an apocalyptic number.

212028700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212028700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253575784).

212028700 is an abundant number, since it is smaller than the sum of its proper divisors (295122868).

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

212028700 is a wasteful number, since it uses less digits than its factorization.

212028700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 212028700 is about 14561.2053072539. The cubic root of 212028700 is about 596.3001018570.

Adding to 212028700 its reverse (7820212), we get a palindrome (219848912).

The spelling of 212028700 in words is "two hundred twelve million, twenty-eight thousand, seven hundred".