212858400 has 144 divisors (see below), whose sum is σ = 715454208. Its totient is φ = 54912000.

The previous prime is 212858381. The next prime is 212858483. The reversal of 212858400 is 4858212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72970 + ... + 75830.

It is an arithmetic number, because the mean of its divisors is an integer number (4968432).

Almost surely, 2^212858400 is an apocalyptic number.

212858400 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 212858400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357727104).

212858400 is an abundant number, since it is smaller than the sum of its proper divisors (502595808).

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

212858400 is a wasteful number, since it uses less digits than its factorization.

212858400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 212858400 is about 14589.6675767476. The cubic root of 212858400 is about 597.0768933165.

The spelling of 212858400 in words is "two hundred twelve million, eight hundred fifty-eight thousand, four hundred".