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10190211280 = 245127377641
BaseRepresentation
bin10010111110110001…
…00100100011010000
3222022011200100221121
421133120210203100
5131332143230110
64403055332024
7510344236534
oct113730444320
928264610847
1010190211280
11435a121617
121b84821014
13c65228122
146c9517bc4
153e9931cda
hex25f6248d0

10190211280 has 20 divisors (see below), whose sum is σ = 23692241412. Its totient is φ = 4076084480.

The previous prime is 10190211277. The next prime is 10190211289. The reversal of 10190211280 is 8211209101.

It can be written as a sum of positive squares in 2 ways, for example, as 3130178704 + 7060032576 = 55948^2 + 84024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10190211289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63688741 + ... + 63688900.

Almost surely, 210190211280 is an apocalyptic number.

10190211280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10190211280 is an abundant number, since it is smaller than the sum of its proper divisors (13502030132).

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

10190211280 is a wasteful number, since it uses less digits than its factorization.

10190211280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127377654 (or 127377648 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 10190211280 in words is "ten billion, one hundred ninety million, two hundred eleven thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 127377641 254755282 509510564 636888205 1019021128 1273776410 2038042256 2547552820 5095105640 10190211280