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45284587540 = 2255342721309
BaseRepresentation
bin101010001011001010…
…111111100000010100
311022212221221101202221
4222023022333200110
51220220323300130
632445313512124
73162123433363
oct521312774024
9138787841687
1045284587540
1118228a72965
128939872644
134368b7393a
14229838d7da
1512a090587a
hexa8b2bf814

45284587540 has 24 divisors (see below), whose sum is σ = 96891931080. Its totient is φ = 17772064128.

The previous prime is 45284587511. The next prime is 45284587547. The reversal of 45284587540 is 4578548254.

It can be written as a sum of positive squares in 4 ways, for example, as 2886483076 + 42398104464 = 53726^2 + 205908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45284587547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21359595 + ... + 21361714.

It is an arithmetic number, because the mean of its divisors is an integer number (4037163795).

Almost surely, 245284587540 is an apocalyptic number.

It is an amenable number.

45284587540 is an abundant number, since it is smaller than the sum of its proper divisors (51607343540).

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

45284587540 is a wasteful number, since it uses less digits than its factorization.

45284587540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42721371 (or 42721369 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 52.

The spelling of 45284587540 in words is "forty-five billion, two hundred eighty-four million, five hundred eighty-seven thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 42721309 85442618 170885236 213606545 427213090 854426180 2264229377 4528458754 9056917508 11321146885 22642293770 45284587540