346228728 has 32 divisors (see below), whose sum is σ = 866183760. Its totient is φ = 115328000.

The previous prime is 346228711. The next prime is 346228747. The reversal of 346228728 is 827822643.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 346228728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36478 + ... + 44978.

Almost surely, 2^346228728 is an apocalyptic number.

It is an amenable number.

346228728 is an abundant number, since it is smaller than the sum of its proper divisors (519955032).

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

346228728 is a wasteful number, since it uses less digits than its factorization.

346228728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10207 (or 10203 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 346228728 is about 18607.2224687082. Note that the first 3 decimals coincide. The cubic root of 346228728 is about 702.1895576606.

The spelling of 346228728 in words is "three hundred forty-six million, two hundred twenty-eight thousand, seven hundred twenty-eight".