220000388 has 12 divisors (see below), whose sum is σ = 385198800. Its totient is φ = 109943592.

The previous prime is 220000379. The next prime is 220000423. The reversal of 220000388 is 883000022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4706 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (32099900).

Almost surely, 2^220000388 is an apocalyptic number.

It is an amenable number.

220000388 is a deficient number, since it is larger than the sum of its proper divisors (165198412).

220000388 is a wasteful number, since it uses less digits than its factorization.

220000388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28306 (or 28304 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 220000388 is about 14832.4100536629. The cubic root of 220000388 is about 603.6814285709.

The spelling of 220000388 in words is "two hundred twenty million, three hundred eighty-eight", and thus it is an aban number.