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549980288 = 27111330047
BaseRepresentation
bin100000110010000…
…000100010000000
31102022212220010022
4200302000202000
52111243332123
6130323553012
716425520034
oct4062004200
91368786108
10549980288
112624a4370
1213422b768
1389c34530
14530861c4
153343c1c8
hex20c80880

549980288 has 64 divisors (see below), whose sum is σ = 1287256320. Its totient is φ = 230753280.

The previous prime is 549980281. The next prime is 549980297. The reversal of 549980288 is 882089945.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (549980281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3281 + ... + 33327.

It is an arithmetic number, because the mean of its divisors is an integer number (20113380).

Almost surely, 2549980288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549980288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643628160).

549980288 is an abundant number, since it is smaller than the sum of its proper divisors (737276032).

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

549980288 is a wasteful number, since it uses less digits than its factorization.

549980288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30085 (or 30073 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The square root of 549980288 is about 23451.6585340995. The cubic root of 549980288 is about 819.3114823256.

The spelling of 549980288 in words is "five hundred forty-nine million, nine hundred eighty thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 11 13 16 22 26 32 44 52 64 88 104 128 143 176 208 286 352 416 572 704 832 1144 1408 1664 2288 4576 9152 18304 30047 60094 120188 240376 330517 390611 480752 661034 781222 961504 1322068 1562444 1923008 2644136 3124888 3846016 4296721 5288272 6249776 8593442 10576544 12499552 17186884 21153088 24999104 34373768 42306176 49998208 68747536 137495072 274990144 549980288