212030340 has 24 divisors (see below), whose sum is σ = 593685120. Its totient is φ = 56541408.

The previous prime is 212030323. The next prime is 212030347. The reversal of 212030340 is 43030212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (212030347) 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, 1766860 + ... + 1766979.

It is an arithmetic number, because the mean of its divisors is an integer number (24736880).

Almost surely, 2^212030340 is an apocalyptic number.

212030340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212030340 is an abundant number, since it is smaller than the sum of its proper divisors (381654780).

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

212030340 is a wasteful number, since it uses less digits than its factorization.

212030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533851 (or 3533849 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 212030340 is about 14561.2616211646. The cubic root of 212030340 is about 596.3016392741.

Adding to 212030340 its reverse (43030212), we get a palindrome (255060552).

The spelling of 212030340 in words is "two hundred twelve million, thirty thousand, three hundred forty".