346641040 has 80 divisors (see below), whose sum is σ = 825322176. Its totient is φ = 135360000.

The previous prime is 346641023. The next prime is 346641047. The reversal of 346641040 is 40146643.

It is a happy number.

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

It is a super-2 number, since 2×346641040² = 240320021224563200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (346641047) 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, 1224739 + ... + 1225021.

Almost surely, 2^346641040 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 346641040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412661088).

346641040 is an abundant number, since it is smaller than the sum of its proper divisors (478681136).

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

346641040 is a wasteful number, since it uses less digits than its factorization.

346641040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 346641040 is about 18618.2985259126. The cubic root of 346641040 is about 702.4681849634.

Adding to 346641040 its reverse (40146643), we get a palindrome (386787683).

The spelling of 346641040 in words is "three hundred forty-six million, six hundred forty-one thousand, forty".