352543440 has 80 divisors (see below), whose sum is σ = 1097036928. Its totient is φ = 93654528.

The previous prime is 352543421. The next prime is 352543441. The reversal of 352543440 is 44345253.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 352543398 and 352543407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352543441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63829 + ... + 69131.

Almost surely, 2^352543440 is an apocalyptic number.

352543440 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 352543440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548518464).

352543440 is an abundant number, since it is smaller than the sum of its proper divisors (744493488).

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

352543440 is a wasteful number, since it uses less digits than its factorization.

352543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5596 (or 5590 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 352543440 is about 18776.1401784286. The cubic root of 352543440 is about 706.4328386614.

Adding to 352543440 its reverse (44345253), we get a palindrome (396888693).

The spelling of 352543440 in words is "three hundred fifty-two million, five hundred forty-three thousand, four hundred forty".