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2040105207 = 37953101939
BaseRepresentation
bin111100110011001…
…1000100011110111
312021011211002020010
41321212120203313
513134231331312
6534234311303
7101361415410
oct17146304367
95234732203
102040105207
1195764a268
1248b288533
13266879a5a
14154d38807
15be18593c
hex799988f7

2040105207 has 16 divisors (see below), whose sum is σ = 3112024320. Its totient is φ = 1164539712.

The previous prime is 2040105191. The next prime is 2040105211. The reversal of 2040105207 is 7025010402.

It is not a de Polignac number, because 2040105207 - 24 = 2040105191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040105307) 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, 30957 + ... + 70982.

It is an arithmetic number, because the mean of its divisors is an integer number (194501520).

Almost surely, 22040105207 is an apocalyptic number.

2040105207 is a deficient number, since it is larger than the sum of its proper divisors (1071919113).

2040105207 is a wasteful number, since it uses less digits than its factorization.

2040105207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102902.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2040105207 is about 45167.5238085950. The cubic root of 2040105207 is about 1268.2869430504.

Adding to 2040105207 its reverse (7025010402), we get a palindrome (9065115609).

The spelling of 2040105207 in words is "two billion, forty million, one hundred five thousand, two hundred seven".

Divisors: 1 3 7 21 953 2859 6671 20013 101939 305817 713573 2140719 97147867 291443601 680035069 2040105207