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808420053 = 3738496193
BaseRepresentation
bin110000001011111…
…000001011010101
32002100011222211110
4300023320023111
53123423420203
6212115125233
726014312530
oct6013701325
92070158743
10808420053
11385371a51
121a68a3819
13cb64057c
147951ba17
154ae8bd03
hex302f82d5

808420053 has 8 divisors (see below), whose sum is σ = 1231878208. Its totient is φ = 461954304.

The previous prime is 808420049. The next prime is 808420061. The reversal of 808420053 is 350024808.

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

It is not a de Polignac number, because 808420053 - 22 = 808420049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 808420053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808420003) 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, 19248076 + ... + 19248117.

It is an arithmetic number, because the mean of its divisors is an integer number (153984776).

Almost surely, 2808420053 is an apocalyptic number.

It is an amenable number.

808420053 is a deficient number, since it is larger than the sum of its proper divisors (423458155).

808420053 is a wasteful number, since it uses less digits than its factorization.

808420053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38496203.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 808420053 is about 28432.7285535525. The cubic root of 808420053 is about 931.5632754820.

The spelling of 808420053 in words is "eight hundred eight million, four hundred twenty thousand, fifty-three".

Divisors: 1 3 7 21 38496193 115488579 269473351 808420053