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2020013001 = 32224445889
BaseRepresentation
bin111100001100110…
…1111001111001001
312012210000021220100
41320121233033021
513114110404001
6532235520013
7101025553506
oct17031571711
95183007810
102020013001
11947276736
124845b9009
13262663686
141523c84ad
15bc517586
hex7866f3c9

2020013001 has 6 divisors (see below), whose sum is σ = 2917796570. Its totient is φ = 1346675328.

The previous prime is 2020012997. The next prime is 2020013011. The reversal of 2020013001 is 1003100202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1015059600 + 1004953401 = 31860^2 + 31701^2 .

It is not a de Polignac number, because 2020013001 - 22 = 2020012997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 224445889 = 2020013001 / (2 + 0 + 2 + 0 + 0 + 1 + 3 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020013011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112222936 + ... + 112222953.

Almost surely, 22020013001 is an apocalyptic number.

It is an amenable number.

2020013001 is a deficient number, since it is larger than the sum of its proper divisors (897783569).

2020013001 is a wasteful number, since it uses less digits than its factorization.

2020013001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224445895 (or 224445892 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2020013001 is about 44944.5547424824. The cubic root of 2020013001 is about 1264.1095768465.

Adding to 2020013001 its reverse (1003100202), we get a palindrome (3023113203).

The spelling of 2020013001 in words is "two billion, twenty million, thirteen thousand, one".

Divisors: 1 3 9 224445889 673337667 2020013001