212815146 has 16 divisors (see below), whose sum is σ = 450667584. Its totient is φ = 66765504.

The previous prime is 212815139. The next prime is 212815147. The reversal of 212815146 is 641518212.

It is not an unprimeable number, because it can be changed into a prime (212815147) 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, 1043110 + ... + 1043313.

It is an arithmetic number, because the mean of its divisors is an integer number (28166724).

Almost surely, 2^212815146 is an apocalyptic number.

212815146 is an abundant number, since it is smaller than the sum of its proper divisors (237852438).

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

212815146 is a wasteful number, since it uses less digits than its factorization.

212815146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086445.

The product of its digits is 3840, while the sum is 30.

The square root of 212815146 is about 14588.1851510049. The cubic root of 212815146 is about 597.0364474716.

The spelling of 212815146 in words is "two hundred twelve million, eight hundred fifteen thousand, one hundred forty-six".