212367900 has 72 divisors (see below), whose sum is σ = 616193200. Its totient is φ = 56471040.

The previous prime is 212367889. The next prime is 212367907. The reversal of 212367900 is 9763212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212367907) 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, 136326 + ... + 137874.

Almost surely, 2^212367900 is an apocalyptic number.

212367900 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 212367900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308096600).

212367900 is an abundant number, since it is smaller than the sum of its proper divisors (403825300).

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

212367900 is a wasteful number, since it uses less digits than its factorization.

212367900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 212367900 is about 14572.8480401053. The cubic root of 212367900 is about 596.6179161124.

The spelling of 212367900 in words is "two hundred twelve million, three hundred sixty-seven thousand, nine hundred".