352131840 has 288 divisors, whose sum is σ = 1306851840. Its totient is φ = 89616384.

The previous prime is 352131839. The next prime is 352131847. The reversal of 352131840 is 48131253.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (352131847) 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 31 ways as a sum of consecutive naturals, for example, 794659 + ... + 795101.

It is an arithmetic number, because the mean of its divisors is an integer number (4537680).

Almost surely, 2^352131840 is an apocalyptic number.

352131840 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 352131840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653425920).

352131840 is an abundant number, since it is smaller than the sum of its proper divisors (954720000).

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

352131840 is a wasteful number, since it uses less digits than its factorization.

352131840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 352131840 is about 18765.1762581650. The cubic root of 352131840 is about 706.1578077900.

The spelling of 352131840 in words is "three hundred fifty-two million, one hundred thirty-one thousand, eight hundred forty".