346820538 has 16 divisors (see below), whose sum is σ = 694552320. Its totient is φ = 115454976.

The previous prime is 346820533. The next prime is 346820549. The reversal of 346820538 is 835028643.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 346820496 and 346820505.

It is not an unprimeable number, because it can be changed into a prime (346820533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32970 + ... + 42197.

It is an arithmetic number, because the mean of its divisors is an integer number (43409520).

Almost surely, 2^346820538 is an apocalyptic number.

346820538 is an abundant number, since it is smaller than the sum of its proper divisors (347731782).

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

346820538 is a wasteful number, since it uses less digits than its factorization.

346820538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75941.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 346820538 is about 18623.1183747513. The cubic root of 346820538 is about 702.5894149600.

The spelling of 346820538 in words is "three hundred forty-six million, eight hundred twenty thousand, five hundred thirty-eight".