332640440 has 128 divisors (see below), whose sum is σ = 855360000. Its totient is φ = 115315200.

The previous prime is 332640431. The next prime is 332640493. The reversal of 332640440 is 44046233.

It is a super-2 number, since 2×332640440² = 221299324646787200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1671461 + ... + 1671659.

It is an arithmetic number, because the mean of its divisors is an integer number (6682500).

Almost surely, 2^332640440 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 332640440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427680000).

332640440 is an abundant number, since it is smaller than the sum of its proper divisors (522719560).

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

332640440 is a wasteful number, since it uses less digits than its factorization.

332640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 332640440 is about 18238.4330467285. The cubic root of 332640440 is about 692.8805156775.

Adding to 332640440 its reverse (44046233), we get a palindrome (376686673).

The spelling of 332640440 in words is "three hundred thirty-two million, six hundred forty thousand, four hundred forty".