212898816 has 132 divisors (see below), whose sum is σ = 662401012. Its totient is φ = 65470464.

The previous prime is 212898811. The next prime is 212898821. The reversal of 212898816 is 618898212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212898811) and next prime (212898821).

It can be written as a sum of positive squares in 2 ways, for example, as 66585600 + 146313216 = 8160^2 + 12096^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212898811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118920 + ... + 120696.

Almost surely, 2^212898816 is an apocalyptic number.

212898816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212898816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331200506).

212898816 is an abundant number, since it is smaller than the sum of its proper divisors (449502196).

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

212898816 is a wasteful number, since it uses less digits than its factorization.

212898816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1795 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 212898816 is about 14591.0526008236. The cubic root of 212898816 is about 597.1146804598.

The spelling of 212898816 in words is "two hundred twelve million, eight hundred ninety-eight thousand, eight hundred sixteen".