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20371425294 = 23113717894663
BaseRepresentation
bin10010111110001110…
…110100100000001110
31221120201102121222010
4102332032310200032
5313210041102134
613205234202050
71320552154323
oct227616644016
957521377863
1020371425294
118704158380
123b46423326
131bc8622c0c
14db376cb4a
157e3687ce9
hex4be3b480e

20371425294 has 64 divisors (see below), whose sum is σ = 45683320320. Its totient is φ = 6001672320.

The previous prime is 20371425287. The next prime is 20371425313. The reversal of 20371425294 is 49252417302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4366407 + ... + 4371069.

It is an arithmetic number, because the mean of its divisors is an integer number (713801880).

Almost surely, 220371425294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20371425294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22841660160).

20371425294 is an abundant number, since it is smaller than the sum of its proper divisors (25311895026).

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

20371425294 is a wasteful number, since it uses less digits than its factorization.

20371425294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20371425294 in words is "twenty billion, three hundred seventy-one million, four hundred twenty-five thousand, two hundred ninety-four".

Divisors: 1 2 3 6 11 22 33 37 66 74 111 222 407 814 1221 1789 2442 3578 4663 5367 9326 10734 13989 19679 27978 39358 51293 59037 66193 102586 118074 132386 153879 172531 198579 307758 345062 397158 517593 728123 1035186 1456246 1897841 2184369 3795682 4368738 5693523 8342107 11387046 16684214 25026321 50052642 91763177 183526354 275289531 308657959 550579062 617315918 925973877 1851947754 3395237549 6790475098 10185712647 20371425294