212935086 has 120 divisors (see below), whose sum is σ = 581151480. Its totient is φ = 56010528.

The previous prime is 212935061. The next prime is 212935091. The reversal of 212935086 is 680539212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212935086.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 561645 + ... + 562023.

It is an arithmetic number, because the mean of its divisors is an integer number (4842929).

Almost surely, 2^212935086 is an apocalyptic number.

212935086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 212935086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290575740).

212935086 is an abundant number, since it is smaller than the sum of its proper divisors (368216394).

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

212935086 is a wasteful number, since it uses less digits than its factorization.

212935086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 212935086 is about 14592.2954328646. The cubic root of 212935086 is about 597.1485872081.

The spelling of 212935086 in words is "two hundred twelve million, nine hundred thirty-five thousand, eighty-six".