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427420808 = 23193190709
BaseRepresentation
bin11001011110011…
…110110010001000
31002210021020010022
4121132132302020
51333404431213
6110225040012
713410005543
oct3136366210
91083236108
10427420808
111aa2a4641
12bb186008
136a722629
1440aa185a
15277cd308
hex1979ec88

427420808 has 32 divisors (see below), whose sum is σ = 870816000. Its totient is φ = 195929280.

The previous prime is 427420793. The next prime is 427420811. The reversal of 427420808 is 808024724.

It is a super-2 number, since 2×4274208082 = 365377094222745728, which contains 22 as substring.

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, 40643 + ... + 50066.

It is an arithmetic number, because the mean of its divisors is an integer number (27213000).

Almost surely, 2427420808 is an apocalyptic number.

It is an amenable number.

427420808 is an abundant number, since it is smaller than the sum of its proper divisors (443395192).

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

427420808 is a wasteful number, since it uses less digits than its factorization.

427420808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90765 (or 90761 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 427420808 is about 20674.1579755984. The cubic root of 427420808 is about 753.2721083891.

The spelling of 427420808 in words is "four hundred twenty-seven million, four hundred twenty thousand, eight hundred eight".

Divisors: 1 2 4 8 19 31 38 62 76 124 152 248 589 1178 2356 4712 90709 181418 362836 725672 1723471 2811979 3446942 5623958 6893884 11247916 13787768 22495832 53427601 106855202 213710404 427420808