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2028201 = 3796581
BaseRepresentation
bin111101111001010101001
310211001011120
413233022221
51004400301
6111245453
723145060
oct7571251
93731146
102028201
1111658aa
12819889
13560226
143ab1d7
152a0e36
hex1ef2a9

2028201 has 8 divisors (see below), whose sum is σ = 3090624. Its totient is φ = 1158960.

The previous prime is 2028199. The next prime is 2028203. The reversal of 2028201 is 1028202.

It is an interprime number because it is at equal distance from previous prime (2028199) and next prime (2028203).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2028201 - 21 = 2028199 is a prime.

It is a super-2 number, since 2×20282012 = 8227198592802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48270 + ... + 48311.

It is an arithmetic number, because the mean of its divisors is an integer number (386328).

22028201 is an apocalyptic number.

2028201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2028201 is a deficient number, since it is larger than the sum of its proper divisors (1062423).

2028201 is an equidigital number, since it uses as much as digits as its factorization.

2028201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96591.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2028201 is about 1424.1492197098. The cubic root of 2028201 is about 126.5815271195.

Subtracting from 2028201 its reverse (1028202), we obtain a palindrome (999999).

The spelling of 2028201 in words is "two million, twenty-eight thousand, two hundred one".

Divisors: 1 3 7 21 96581 289743 676067 2028201