212681892 has 24 divisors (see below), whose sum is σ = 498195936. Its totient is φ = 70617088.

The previous prime is 212681879. The next prime is 212681899. The reversal of 212681892 is 298186212.

It is a self number, because there is not a number n which added to its sum of digits gives 212681892.

It is not an unprimeable number, because it can be changed into a prime (212681899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31398 + ... + 37565.

It is an arithmetic number, because the mean of its divisors is an integer number (20758164).

Almost surely, 2^212681892 is an apocalyptic number.

It is an amenable number.

212681892 is an abundant number, since it is smaller than the sum of its proper divisors (285514044).

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

212681892 is a wasteful number, since it uses less digits than its factorization.

212681892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69227 (or 69225 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 212681892 is about 14583.6172467601. The cubic root of 212681892 is about 596.9118101874.

The spelling of 212681892 in words is "two hundred twelve million, six hundred eighty-one thousand, eight hundred ninety-two".