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20002230145 = 519210549791
BaseRepresentation
bin10010101000001110…
…011100111110000001
31220121222201120102201
4102220032130332001
5311431032331040
613104445113201
71305450102532
oct225016347601
956558646381
1020002230145
118534812617
123a62858801
131b69ca8a51
14d7a706689
157c105ba9a
hex4a839cf81

20002230145 has 8 divisors (see below), whose sum is σ = 25265975040. Its totient is φ = 15159584880.

The previous prime is 20002230139. The next prime is 20002230203. The reversal of 20002230145 is 54103220002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-20002230145 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105274801 + ... + 105274990.

It is an arithmetic number, because the mean of its divisors is an integer number (3158246880).

Almost surely, 220002230145 is an apocalyptic number.

It is an amenable number.

20002230145 is a deficient number, since it is larger than the sum of its proper divisors (5263744895).

20002230145 is a wasteful number, since it uses less digits than its factorization.

20002230145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210549815.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20002230145 its reverse (54103220002), we get a palindrome (74105450147).

The spelling of 20002230145 in words is "twenty billion, two million, two hundred thirty thousand, one hundred forty-five".

Divisors: 1 5 19 95 210549791 1052748955 4000446029 20002230145