332143440 has 80 divisors (see below), whose sum is σ = 1031773248. Its totient is φ = 88388608.

The previous prime is 332143439. The next prime is 332143447. The reversal of 332143440 is 44341233.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×332143440² = 220638529470067200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 332143440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332143447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146959 + ... + 149201.

Almost surely, 2^332143440 is an apocalyptic number.

332143440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 332143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515886624).

332143440 is an abundant number, since it is smaller than the sum of its proper divisors (699629808).

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

332143440 is a wasteful number, since it uses less digits than its factorization.

332143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 332143440 is about 18224.8028795924. The cubic root of 332143440 is about 692.5352647483.

Adding to 332143440 its reverse (44341233), we get a palindrome (376484673).

The spelling of 332143440 in words is "three hundred thirty-two million, one hundred forty-three thousand, four hundred forty".