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384971420 = 22519248571
BaseRepresentation
bin10110111100100…
…011001010011100
3222211101120111202
4112330203022130
51242023041140
6102111135032
712353126441
oct2674431234
9884346452
10384971420
111883407a9
12a8b14478
13619abc52
14391b19c8
1523be5915
hex16f2329c

384971420 has 12 divisors (see below), whose sum is σ = 808440024. Its totient is φ = 153988560.

The previous prime is 384971393. The next prime is 384971429. The reversal of 384971420 is 24179483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384971429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9624266 + ... + 9624305.

It is an arithmetic number, because the mean of its divisors is an integer number (67370002).

Almost surely, 2384971420 is an apocalyptic number.

It is an amenable number.

384971420 is an abundant number, since it is smaller than the sum of its proper divisors (423468604).

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

384971420 is a wasteful number, since it uses less digits than its factorization.

384971420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19248580 (or 19248578 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 384971420 is about 19620.6885709957. The cubic root of 384971420 is about 727.4606332741.

The spelling of 384971420 in words is "three hundred eighty-four million, nine hundred seventy-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 19248571 38497142 76994284 96242855 192485710 384971420