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10202301220 = 225510115061
BaseRepresentation
bin10011000000001101…
…01100001100100100
3222100000102121020011
421200012230030210
5131343242114340
64404210420004
7510552062266
oct114006541444
928300377204
1010202301220
114365a29a01
121b88891604
13c6789c037
146cad83b36
153eaa1e0ea
hex2601ac324

10202301220 has 12 divisors (see below), whose sum is σ = 21424832604. Its totient is φ = 4080920480.

The previous prime is 10202301203. The next prime is 10202301253. The reversal of 10202301220 is 2210320201.

It can be written as a sum of positive squares in 2 ways, for example, as 3476989156 + 6725312064 = 58966^2 + 82008^2 .

It is a super-2 number, since 2×102023012202 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10202301220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255057511 + ... + 255057550.

It is an arithmetic number, because the mean of its divisors is an integer number (1785402717).

Almost surely, 210202301220 is an apocalyptic number.

10202301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202301220 is an abundant number, since it is smaller than the sum of its proper divisors (11222531384).

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

10202301220 is a wasteful number, since it uses less digits than its factorization.

10202301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510115070 (or 510115068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 10202301220 its reverse (2210320201), we get a palindrome (12412621421).

The spelling of 10202301220 in words is "ten billion, two hundred two million, three hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 510115061 1020230122 2040460244 2550575305 5101150610 10202301220