355988220 has 96 divisors (see below), whose sum is σ = 1153689600. Its totient is φ = 80331264.

The previous prime is 355988203. The next prime is 355988233. The reversal of 355988220 is 22889553.

It is a super-2 number, since 2×355988220² = 253455225557536800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27816 + ... + 38544.

It is an arithmetic number, because the mean of its divisors is an integer number (12017600).

Almost surely, 2^355988220 is an apocalyptic number.

355988220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355988220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576844800).

355988220 is an abundant number, since it is smaller than the sum of its proper divisors (797701380).

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

355988220 is a wasteful number, since it uses less digits than its factorization.

355988220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10827 (or 10825 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 355988220 is about 18867.6500921551. The cubic root of 355988220 is about 708.7262887532.

The spelling of 355988220 in words is "three hundred fifty-five million, nine hundred eighty-eight thousand, two hundred twenty".