212740092 has 72 divisors (see below), whose sum is σ = 560864304. Its totient is φ = 67931136.

The previous prime is 212740081. The next prime is 212740097. The reversal of 212740092 is 290047212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212740097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80748 + ... + 83340.

It is an arithmetic number, because the mean of its divisors is an integer number (7789782).

Almost surely, 2^212740092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212740092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280432152).

212740092 is an abundant number, since it is smaller than the sum of its proper divisors (348124212).

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

212740092 is a wasteful number, since it uses less digits than its factorization.

212740092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 212740092 is about 14585.6124999946. The cubic root of 212740092 is about 596.9662531533.

The spelling of 212740092 in words is "two hundred twelve million, seven hundred forty thousand, ninety-two".