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20030820319 = 191397584559
BaseRepresentation
bin10010101001111011…
…100000111111011111
31220200222112002210001
4102221323200333133
5312010342222234
613111345555131
71306245110026
oct225173407737
956628462701
1020030820319
11854996a864
123a70345aa7
131b72ba9103
14d804298bd
157c3807d14
hex4a9ee0fdf

20030820319 has 8 divisors (see below), whose sum is σ = 21236768000. Its totient is φ = 18840042072.

The previous prime is 20030820287. The next prime is 20030820323. The reversal of 20030820319 is 91302803002.

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

It is a cyclic number.

It is not a de Polignac number, because 20030820319 - 25 = 20030820287 is a prime.

It is a super-2 number, since 2×200308203192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030820389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3789639 + ... + 3794920.

It is an arithmetic number, because the mean of its divisors is an integer number (2654596000).

Almost surely, 220030820319 is an apocalyptic number.

20030820319 is a deficient number, since it is larger than the sum of its proper divisors (1205947681).

20030820319 is a wasteful number, since it uses less digits than its factorization.

20030820319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584717.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 20030820319 in words is "twenty billion, thirty million, eight hundred twenty thousand, three hundred nineteen".

Divisors: 1 19 139 2641 7584559 144106621 1054253701 20030820319