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808402040 = 23549141161
BaseRepresentation
bin110000001011110…
…011110001111000
32002100011002010022
4300023303301320
53123422331130
6212114510012
726014206155
oct6013636170
92070132108
10808402040
1138535a466
121a6895308
13cb635304
147951522c
154ae867e5
hex302f3c78

808402040 has 32 divisors (see below), whose sum is σ = 1822653360. Its totient is φ = 322694400.

The previous prime is 808402027. The next prime is 808402051. The reversal of 808402040 is 40204808.

808402040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 941 + ... + 40220.

Almost surely, 2808402040 is an apocalyptic number.

It is an amenable number.

808402040 is an abundant number, since it is smaller than the sum of its proper divisors (1014251320).

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

808402040 is a wasteful number, since it uses less digits than its factorization.

808402040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41663 (or 41659 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 808402040 is about 28432.4117865509. The cubic root of 808402040 is about 931.5563564825.

Adding to 808402040 its reverse (40204808), we get a palindrome (848606848).

The spelling of 808402040 in words is "eight hundred eight million, four hundred two thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 491 982 1964 2455 3928 4910 9820 19640 41161 82322 164644 205805 329288 411610 823220 1646440 20210051 40420102 80840204 101050255 161680408 202100510 404201020 808402040