220986390 has 32 divisors (see below), whose sum is σ = 530758656. Its totient is φ = 58886240.

The previous prime is 220986379. The next prime is 220986391. The reversal of 220986390 is 93689022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220986391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76309 + ... + 79151.

It is an arithmetic number, because the mean of its divisors is an integer number (16586208).

Almost surely, 2^220986390 is an apocalyptic number.

220986390 is an abundant number, since it is smaller than the sum of its proper divisors (309772266).

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

220986390 is a wasteful number, since it uses less digits than its factorization.

220986390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 220986390 is about 14865.6109864344. The cubic root of 220986390 is about 604.5819482918.

The spelling of 220986390 in words is "two hundred twenty million, nine hundred eighty-six thousand, three hundred ninety".