27020220 has 96 divisors (see below), whose sum is σ = 79564800. Its totient is φ = 6842880.

The previous prime is 27020219. The next prime is 27020233. The reversal of 27020220 is 2202072.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 27020220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135681 + ... + 135879.

It is an arithmetic number, because the mean of its divisors is an integer number (828800).

Almost surely, 2^27020220 is an apocalyptic number.

27020220 is a gapful number since it is divisible by the number (20) 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 27020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39782400).

27020220 is an abundant number, since it is smaller than the sum of its proper divisors (52544580).

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

27020220 is a wasteful number, since it uses less digits than its factorization.

27020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 27020220 is about 5198.0977289774. The cubic root of 27020220 is about 300.0748702022.

Adding to 27020220 its reverse (2202072), we get a palindrome (29222292).

The spelling of 27020220 in words is "twenty-seven million, twenty thousand, two hundred twenty".