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215360045020 = 22543250418657
BaseRepresentation
bin1100100010010001110…
…1010111111111011100
3202120212210220211002201
43020210131113333130
512012024132420040
6242533545101244
721362552115241
oct3104435277734
9676783824081
10215360045020
118337414938a
12358a3787824
131740162a603
14a5d00695c8
155906ba8a9a
hex3224757fdc

215360045020 has 24 divisors (see below), whose sum is σ = 462773679984. Its totient is φ = 84140668416.

The previous prime is 215360044957. The next prime is 215360045071. The reversal of 215360045020 is 20540063512.

It is a self number, because there is not a number n which added to its sum of digits gives 215360045020.

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, 125208469 + ... + 125210188.

It is an arithmetic number, because the mean of its divisors is an integer number (19282236666).

Almost surely, 2215360045020 is an apocalyptic number.

215360045020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215360045020 is an abundant number, since it is smaller than the sum of its proper divisors (247413634964).

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

215360045020 is a wasteful number, since it uses less digits than its factorization.

215360045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250418709 (or 250418707 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 215360045020 in words is "two hundred fifteen billion, three hundred sixty million, forty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 250418657 500837314 1001674628 1252093285 2504186570 5008373140 10768002251 21536004502 43072009004 53840011255 107680022510 215360045020