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54389430 = 2325619907
BaseRepresentation
bin1100111101111…
…0101010110110
310210100021021100
43033132222312
5102410430210
65221430530
71230205524
oct317365266
9123307240
1054389430
1128779647
121626b446
13b3642c4
14731b314
154b955c0
hex33deab6

54389430 has 48 divisors (see below), whose sum is σ = 143745264. Its totient is φ = 14264640.

The previous prime is 54389417. The next prime is 54389473. The reversal of 54389430 is 3498345.

54389430 is a `hidden beast` number, since 543 + 89 + 4 + 30 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 537 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (2994693).

Almost surely, 254389430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54389430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71872632).

54389430 is an abundant number, since it is smaller than the sum of its proper divisors (89355834).

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

54389430 is a wasteful number, since it uses less digits than its factorization.

54389430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9981 (or 9978 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 54389430 is about 7374.9189826058. The cubic root of 54389430 is about 378.8827525366.

The spelling of 54389430 in words is "fifty-four million, three hundred eighty-nine thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 61 90 122 183 305 366 549 610 915 1098 1830 2745 5490 9907 19814 29721 49535 59442 89163 99070 148605 178326 297210 445815 604327 891630 1208654 1812981 3021635 3625962 5438943 6043270 9064905 10877886 18129810 27194715 54389430