343408428 has 72 divisors (see below), whose sum is σ = 953412096. Its totient is φ = 103356000.

The previous prime is 343408427. The next prime is 343408441. The reversal of 343408428 is 824804343.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 343408392 and 343408401.

It is not an unprimeable number, because it can be changed into a prime (343408427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56925 + ... + 62667.

Almost surely, 2^343408428 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 343408428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476706048).

343408428 is an abundant number, since it is smaller than the sum of its proper divisors (610003668).

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

343408428 is a wasteful number, since it uses less digits than its factorization.

343408428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915 (or 5910 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 343408428 is about 18531.2824164978. The cubic root of 343408428 is about 700.2777319694.

The spelling of 343408428 in words is "three hundred forty-three million, four hundred eight thousand, four hundred twenty-eight".