347400438 has 96 divisors (see below), whose sum is σ = 879766272. Its totient is φ = 89517120.

The previous prime is 347400409. The next prime is 347400439. The reversal of 347400438 is 834004743.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 347400399 and 347400408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347400439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1000981 + ... + 1001327.

It is an arithmetic number, because the mean of its divisors is an integer number (9164232).

Almost surely, 2^347400438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 347400438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439883136).

347400438 is an abundant number, since it is smaller than the sum of its proper divisors (532365834).

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

347400438 is a wasteful number, since it uses less digits than its factorization.

347400438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 347400438 is about 18638.6812301729. The cubic root of 347400438 is about 702.9807842574.

The spelling of 347400438 in words is "three hundred forty-seven million, four hundred thousand, four hundred thirty-eight".