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571472020 = 225710738149
BaseRepresentation
bin100010000011111…
…111100010010100
31110211022210020101
4202003333202110
52132244101040
6132412343444
720106301120
oct4203774224
91424283211
10571472020
11273643429
1213b474b84
139151a932
1455c7c580
153528509a
hex220ff894

571472020 has 48 divisors (see below), whose sum is σ = 1384387200. Its totient is φ = 194097024.

The previous prime is 571472009. The next prime is 571472029. The reversal of 571472020 is 20274175.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 571472020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571472029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4095 + ... + 34054.

It is an arithmetic number, because the mean of its divisors is an integer number (28841400).

Almost surely, 2571472020 is an apocalyptic number.

It is an amenable number.

571472020 is an abundant number, since it is smaller than the sum of its proper divisors (812915180).

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

571472020 is a wasteful number, since it uses less digits than its factorization.

571472020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38272 (or 38270 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 571472020 is about 23905.4809614866. The cubic root of 571472020 is about 829.8475647867.

The spelling of 571472020 in words is "five hundred seventy-one million, four hundred seventy-two thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 107 140 214 428 535 749 1070 1498 2140 2996 3745 7490 14980 38149 76298 152596 190745 267043 381490 534086 762980 1068172 1335215 2670430 4081943 5340860 8163886 16327772 20409715 28573601 40819430 57147202 81638860 114294404 142868005 285736010 571472020