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55268288 = 263189313
BaseRepresentation
bin1101001011010…
…1001111000000
310211222220211122
43102311033000
5103122041123
65252331412
71240526015
oct322651700
9124886748
1055268288
1129219979
1216613b68
13b5b133a
1474a970c
154cbabc8
hex34b53c0

55268288 has 56 divisors (see below), whose sum is σ = 114848640. Its totient is φ = 26357760.

The previous prime is 55268281. The next prime is 55268293. The reversal of 55268288 is 88286255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55268281) 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, 176420 + ... + 176732.

Almost surely, 255268288 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 55268288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57424320).

55268288 is an abundant number, since it is smaller than the sum of its proper divisors (59580352).

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

55268288 is a wasteful number, since it uses less digits than its factorization.

55268288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The square root of 55268288 is about 7434.2644558826. The cubic root of 55268288 is about 380.9125988140.

The spelling of 55268288 in words is "fifty-five million, two hundred sixty-eight thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 31 32 62 64 89 124 178 248 313 356 496 626 712 992 1252 1424 1984 2504 2759 2848 5008 5518 5696 9703 10016 11036 19406 20032 22072 27857 38812 44144 55714 77624 88288 111428 155248 176576 222856 310496 445712 620992 863567 891424 1727134 1782848 3454268 6908536 13817072 27634144 55268288