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808251420 = 223513470857
BaseRepresentation
bin110000001011001…
…111000000011100
32002022212102111210
4300023033000130
53123403021140
6212111344420
726013011064
oct6013170034
92068772453
10808251420
11385267289
121a6822110
13cb5b18a2
14794b63a4
154ae56d80
hex302cf01c

808251420 has 24 divisors (see below), whose sum is σ = 2263104144. Its totient is φ = 215533696.

The previous prime is 808251407. The next prime is 808251461. The reversal of 808251420 is 24152808.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 6735369 + ... + 6735488.

It is an arithmetic number, because the mean of its divisors is an integer number (94296006).

Almost surely, 2808251420 is an apocalyptic number.

It is an amenable number.

808251420 is an abundant number, since it is smaller than the sum of its proper divisors (1454852724).

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

808251420 is a wasteful number, since it uses less digits than its factorization.

808251420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13470869 (or 13470867 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 808251420 is about 28429.7629254976. The cubic root of 808251420 is about 931.4984975928.

The spelling of 808251420 in words is "eight hundred eight million, two hundred fifty-one thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 13470857 26941714 40412571 53883428 67354285 80825142 134708570 161650284 202062855 269417140 404125710 808251420