355220020 has 24 divisors (see below), whose sum is σ = 752568264. Its totient is φ = 140829696.

The previous prime is 355220011. The next prime is 355220053. The reversal of 355220020 is 20022553.

It can be written as a sum of positive squares in 4 ways, for example, as 39589264 + 315630756 = 6292^2 + 17766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 355220020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76329 + ... + 80848.

It is an arithmetic number, because the mean of its divisors is an integer number (31357011).

Almost surely, 2^355220020 is an apocalyptic number.

It is an amenable number.

355220020 is an abundant number, since it is smaller than the sum of its proper divisors (397348244).

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

355220020 is a wasteful number, since it uses less digits than its factorization.

355220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157299 (or 157297 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 355220020 is about 18847.2815015853. The cubic root of 355220020 is about 708.2161261509.

Adding to 355220020 its reverse (20022553), we get a palindrome (375242573).

The spelling of 355220020 in words is "three hundred fifty-five million, two hundred twenty thousand, twenty".