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100220220 = 22335185593
BaseRepresentation
bin1011111100100…
…11110100111100
320222120201022000
411332103310330
5201124021340
613540022300
72324600142
oct576236474
9228521260
10100220220
1151631a31
1229691990
13179bcb09
14d44b592
158be9d30
hex5f93d3c

100220220 has 48 divisors (see below), whose sum is σ = 311797920. Its totient is φ = 26725248.

The previous prime is 100220213. The next prime is 100220227. The reversal of 100220220 is 22022001.

It is an interprime number because it is at equal distance from previous prime (100220213) and next prime (100220227).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92257 + ... + 93336.

It is an arithmetic number, because the mean of its divisors is an integer number (6495790).

Almost surely, 2100220220 is an apocalyptic number.

100220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220220 is an abundant number, since it is smaller than the sum of its proper divisors (211577700).

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

100220220 is a wasteful number, since it uses less digits than its factorization.

100220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185611 (or 185603 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 100220220 is about 10011.0049445598. The cubic root of 100220220 is about 464.4993571173.

Adding to 100220220 its reverse (22022001), we get a palindrome (122242221).

The spelling of 100220220 in words is "one hundred million, two hundred twenty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 185593 371186 556779 742372 927965 1113558 1670337 1855930 2227116 2783895 3340674 3711860 5011011 5567790 6681348 8351685 10022022 11135580 16703370 20044044 25055055 33406740 50110110 100220220