346621240 has 64 divisors (see below), whose sum is σ = 910310400. Its totient is φ = 116308608.

The previous prime is 346621229. The next prime is 346621259. The reversal of 346621240 is 42126643.

346621240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 346621199 and 346621208.

It is a congruent number.

It is an unprimeable number.

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, 10 + ... + 26329.

It is an arithmetic number, because the mean of its divisors is an integer number (14223600).

Almost surely, 2^346621240 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 346621240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455155200).

346621240 is an abundant number, since it is smaller than the sum of its proper divisors (563689160).

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

346621240 is a wasteful number, since it uses less digits than its factorization.

346621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26404 (or 26400 counting only the distinct ones).

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

The square root of 346621240 is about 18617.7667833712. The cubic root of 346621240 is about 702.4548098065.

Adding to 346621240 its reverse (42126643), we get a palindrome (388747883).

The spelling of 346621240 in words is "three hundred forty-six million, six hundred twenty-one thousand, two hundred forty".