3212445440 has 72 divisors (see below), whose sum is σ = 7821145248. Its totient is φ = 1263882240.

The previous prime is 3212445437. The next prime is 3212445461. The reversal of 3212445440 is 445442123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57509 + ... + 98651.

Almost surely, 2^3212445440 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 3212445440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3910572624).

3212445440 is an abundant number, since it is smaller than the sum of its proper divisors (4608699808).

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

3212445440 is an equidigital number, since it uses as much as digits as its factorization.

3212445440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41225 (or 41211 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 3212445440 is about 56678.4389340426. The cubic root of 3212445440 is about 1475.5205195361.

Adding to 3212445440 its reverse (445442123), we get a palindrome (3657887563).

The spelling of 3212445440 in words is "three billion, two hundred twelve million, four hundred forty-five thousand, four hundred forty".