212030440 has 16 divisors (see below), whose sum is σ = 477068580. Its totient is φ = 84812160.

The previous prime is 212030417. The next prime is 212030447. The reversal of 212030440 is 44030212.

212030440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 210076036 + 1954404 = 14494^2 + 1398^2 .

It is not an unprimeable number, because it can be changed into a prime (212030447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650341 + ... + 2650420.

Almost surely, 2^212030440 is an apocalyptic number.

212030440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212030440 is an abundant number, since it is smaller than the sum of its proper divisors (265038140).

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

212030440 is a wasteful number, since it uses less digits than its factorization.

212030440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300772 (or 5300768 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212030440 is about 14561.2650549326. The cubic root of 212030440 is about 596.3017330188.

Adding to 212030440 its reverse (44030212), we get a palindrome (256060652).

The spelling of 212030440 in words is "two hundred twelve million, thirty thousand, four hundred forty".