346220056 has 64 divisors (see below), whose sum is σ = 803880000. Its totient is φ = 136124928.

The previous prime is 346220051. The next prime is 346220087. The reversal of 346220056 is 650022643.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346220051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124570 + ... + 127318.

It is an arithmetic number, because the mean of its divisors is an integer number (12560625).

Almost surely, 2^346220056 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 346220056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401940000).

346220056 is an abundant number, since it is smaller than the sum of its proper divisors (457659944).

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

346220056 is a wasteful number, since it uses less digits than its factorization.

346220056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 346220056 is about 18606.9894394553. The cubic root of 346220056 is about 702.1836950250.

Adding to 346220056 its reverse (650022643), we get a palindrome (996242699).

The spelling of 346220056 in words is "three hundred forty-six million, two hundred twenty thousand, fifty-six".