212250808 has 128 divisors (see below), whose sum is σ = 527523840. Its totient is φ = 77616000.

The previous prime is 212250803. The next prime is 212250811. The reversal of 212250808 is 808052212.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212250803) 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 31 ways as a sum of consecutive naturals, for example, 1005823 + ... + 1006033.

It is an arithmetic number, because the mean of its divisors is an integer number (4121280).

Almost surely, 2^212250808 is an apocalyptic number.

212250808 is a gapful number since it is divisible by the number (28) 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 212250808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263761920).

212250808 is an abundant number, since it is smaller than the sum of its proper divisors (315273032).

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

212250808 is a wasteful number, since it uses less digits than its factorization.

212250808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 212250808 is about 14568.8300147953. The cubic root of 212250808 is about 596.5082447539.

The spelling of 212250808 in words is "two hundred twelve million, two hundred fifty thousand, eight hundred eight".