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54788868 = 22321521913
BaseRepresentation
bin1101000100000…
…0001100000100
310211002120012100
43101000030010
5103011220433
65234152100
71233461211
oct321001404
9124076170
1054788868
1128a21762
1216422630
13b474064
1473c2b08
154c23b13
hex3440304

54788868 has 18 divisors (see below), whose sum is σ = 138494174. Its totient is φ = 18262944.

The previous prime is 54788861. The next prime is 54788869. The reversal of 54788868 is 86888745.

It can be written as a sum of positive squares in only one way, i.e., 54199044 + 589824 = 7362^2 + 768^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (54788861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 760921 + ... + 760992.

Almost surely, 254788868 is an apocalyptic number.

It is an amenable number.

54788868 is an abundant number, since it is smaller than the sum of its proper divisors (83705306).

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

54788868 is a wasteful number, since it uses less digits than its factorization.

54788868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521923 (or 1521918 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 54788868 is about 7401.9502835401. The cubic root of 54788868 is about 379.8080008830.

The spelling of 54788868 in words is "fifty-four million, seven hundred eighty-eight thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1521913 3043826 4565739 6087652 9131478 13697217 18262956 27394434 54788868