212766426 has 48 divisors (see below), whose sum is σ = 483537600. Its totient is φ = 70111008.

The previous prime is 212766413. The next prime is 212766461. The reversal of 212766426 is 624667212.

212766426 is a `hidden beast` number, since 2 + 1 + 2 + 7 + 6 + 642 + 6 = 666.

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, 40795 + ... + 45713.

It is an arithmetic number, because the mean of its divisors is an integer number (10073700).

Almost surely, 2^212766426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212766426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241768800).

212766426 is an abundant number, since it is smaller than the sum of its proper divisors (270771174).

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

212766426 is an equidigital number, since it uses as much as digits as its factorization.

212766426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025 (or 5013 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 212766426 is about 14586.5152109748. The cubic root of 212766426 is about 596.9908839294.

The spelling of 212766426 in words is "two hundred twelve million, seven hundred sixty-six thousand, four hundred twenty-six".