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10000220020 = 2257173412891
BaseRepresentation
bin10010101000000111…
…10011111101110100
3221210221011210221021
421110003303331310
5130440024020040
64332151230524
7502546316260
oct112403637564
927727153837
1010000220020
11427195534a
121b31078444
13c34a6666b
146ac1bd0a0
153d7e0324a
hex2540f3f74

10000220020 has 48 divisors (see below), whose sum is σ = 24139317888. Its totient is φ = 3408819840.

The previous prime is 10000219997. The next prime is 10000220023. The reversal of 10000220020 is 2002200001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 10000219985 and 10000220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000220023) 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, 182226 + ... + 230665.

It is an arithmetic number, because the mean of its divisors is an integer number (502902456).

Almost surely, 210000220020 is an apocalyptic number.

10000220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10000220020 is an abundant number, since it is smaller than the sum of its proper divisors (14139097868).

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

10000220020 is a wasteful number, since it uses less digits than its factorization.

10000220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413080 (or 413078 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 10000220020 its reverse (2002200001), we get a palindrome (12002420021).

The spelling of 10000220020 in words is "ten billion, two hundred twenty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 173 346 692 865 1211 1730 2422 3460 4844 6055 12110 24220 412891 825782 1651564 2064455 2890237 4128910 5780474 8257820 11560948 14451185 28902370 57804740 71430143 142860286 285720572 357150715 500011001 714301430 1000022002 1428602860 2000044004 2500055005 5000110010 10000220020