351543420 has 72 divisors (see below), whose sum is σ = 1069111680. Its totient is φ = 93502080.

The previous prime is 351543407. The next prime is 351543469. The reversal of 351543420 is 24345153.

351543420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×351543420² = 247165552290592800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 73461 + ... + 78099.

Almost surely, 2^351543420 is an apocalyptic number.

351543420 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 351543420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534555840).

351543420 is an abundant number, since it is smaller than the sum of its proper divisors (717568260).

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

351543420 is a wasteful number, since it uses less digits than its factorization.

351543420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075 (or 5070 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 351543420 is about 18749.4911930964. The cubic root of 351543420 is about 705.7642534529.

Adding to 351543420 its reverse (24345153), we get a palindrome (375888573).

The spelling of 351543420 in words is "three hundred fifty-one million, five hundred forty-three thousand, four hundred twenty".