3240400212 has 144 divisors (see below), whose sum is σ = 9535344000. Its totient is φ = 908734464.

The previous prime is 3240400187. The next prime is 3240400213. The reversal of 3240400212 is 2120040423.

3240400212 is a `hidden beast` number, since 3 + 240 + 400 + 21 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240400213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6493539 + ... + 6494037.

Almost surely, 2^3240400212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3240400212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4767672000).

3240400212 is an abundant number, since it is smaller than the sum of its proper divisors (6294943788).

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

3240400212 is a wasteful number, since it uses less digits than its factorization.

3240400212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3240400212 is about 56924.5132785516. The cubic root of 3240400212 is about 1479.7881684890.

Adding to 3240400212 its reverse (2120040423), we get a palindrome (5360440635).

The spelling of 3240400212 in words is "three billion, two hundred forty million, four hundred thousand, two hundred twelve".