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10207262961 = 32721722832
BaseRepresentation
bin10011000000110011…
…00111100011110001
3222100100202200110100
421200121213203301
5131401024403321
64404505023013
7510642206100
oct114031474361
928310680410
1010207262961
114368808815
121b8a484a69
13c6891858c
146cb8b6037
153eb19e326
hex2606678f1

10207262961 has 81 divisors (see below), whose sum is σ = 18283812651. Its totient is φ = 5470222464.

The previous prime is 10207262959. The next prime is 10207262969. The reversal of 10207262961 is 16926270201.

The square root of 10207262961 is 101031.

It is a perfect power (a square), and thus also a powerful number.

10207262961 is a `hidden beast` number, since 1 + 0 + 20 + 7 + 2 + 629 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7946831025 + 2260431936 = 89145^2 + 47544^2 .

It is not a de Polignac number, because 10207262961 - 21 = 10207262959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10207262969) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 36067926 + ... + 36068208.

Almost surely, 210207262961 is an apocalyptic number.

10207262961 is the 101031-st square number.

10207262961 is the 50516-th centered octagonal number.

It is an amenable number.

10207262961 is a deficient number, since it is larger than the sum of its proper divisors (8076549690).

10207262961 is an equidigital number, since it uses as much as digits as its factorization.

10207262961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

Multiplying 10207262961 by its sum of digits (36), we get a square (367461466596 = 6061862).

The spelling of 10207262961 in words is "ten billion, two hundred seven million, two hundred sixty-two thousand, nine hundred sixty-one".

Divisors: 1 3 7 9 17 21 49 51 63 119 147 153 283 289 357 441 833 849 867 1071 1981 2023 2499 2547 2601 4811 5943 6069 7497 13867 14161 14433 17829 18207 33677 41601 42483 43299 80089 81787 101031 124803 127449 235739 240267 245361 303093 560623 572509 707217 720801 736083 1361513 1681869 1717527 2121651 3924361 4007563 4084539 5045607 5152581 9530591 11773083 12022689 12253617 23145721 28591773 35319249 36068067 66714137 69437163 85775319 162020047 200142411 208311489 486060141 600427233 1134140329 1458180423 3402420987 10207262961