220771384 has 16 divisors (see below), whose sum is σ = 438296400. Its totient is φ = 103892352.

The previous prime is 220771381. The next prime is 220771409. The reversal of 220771384 is 483177022.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220771381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811524 + ... + 811795.

It is an arithmetic number, because the mean of its divisors is an integer number (27393525).

Almost surely, 2^220771384 is an apocalyptic number.

It is an amenable number.

220771384 is a deficient number, since it is larger than the sum of its proper divisors (217525016).

220771384 is a wasteful number, since it uses less digits than its factorization.

220771384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623342 (or 1623338 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 220771384 is about 14858.3775695733. The cubic root of 220771384 is about 604.3858111358.

The spelling of 220771384 in words is "two hundred twenty million, seven hundred seventy-one thousand, three hundred eighty-four".