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10202002100 = 2252102020021
BaseRepresentation
bin10011000000001011…
…00011001010110100
3222022222212101220122
421200011203022310
5131343203031400
64404200151112
7510546405233
oct114005431264
928288771818
1010202002100
1143658451a4
121b88768498
13c677c5b44
146cad06b1a
153ea9b0685
hex2601632b4

10202002100 has 18 divisors (see below), whose sum is σ = 22138344774. Its totient is φ = 4080800800.

The previous prime is 10202002099. The next prime is 10202002117. The reversal of 10202002100 is 120020201.

It can be written as a sum of positive squares in 3 ways, for example, as 960256144 + 9241745956 = 30988^2 + 96134^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 51009911 + ... + 51010110.

It is an arithmetic number, because the mean of its divisors is an integer number (1229908043).

Almost surely, 210202002100 is an apocalyptic number.

10202002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202002100 is an abundant number, since it is smaller than the sum of its proper divisors (11936342674).

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

10202002100 is a wasteful number, since it uses less digits than its factorization.

10202002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102020035 (or 102020028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 10202002100 its reverse (120020201), we get a palindrome (10322022301).

The spelling of 10202002100 in words is "ten billion, two hundred two million, two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 102020021 204040042 408080084 510100105 1020200210 2040400420 2550500525 5101001050 10202002100