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57189468 = 22372195119
BaseRepresentation
bin1101101000101…
…0010001011100
310222121112012110
43122022101130
5104120030333
65401434020
71263050100
oct332122134
9128545173
1057189468
112a311326
121719b910
13bb0492b
147849900
15504a063
hex368a45c

57189468 has 72 divisors (see below), whose sum is σ = 163430400. Its totient is φ = 15476832.

The previous prime is 57189463. The next prime is 57189469. The reversal of 57189468 is 86498175.

It is a super-3 number, since 3×571894683 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57189463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8613 + ... + 13731.

Almost surely, 257189468 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 57189468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81715200).

57189468 is an abundant number, since it is smaller than the sum of its proper divisors (106240932).

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

57189468 is a wasteful number, since it uses less digits than its factorization.

57189468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159 (or 5150 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 57189468 is about 7562.3718501539. The cubic root of 57189468 is about 385.2760554570.

The spelling of 57189468 in words is "fifty-seven million, one hundred eighty-nine thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 49 57 76 84 98 114 133 147 196 228 266 294 399 532 588 798 931 1596 1862 2793 3724 5119 5586 10238 11172 15357 20476 30714 35833 61428 71666 97261 107499 143332 194522 214998 250831 291783 389044 429996 501662 583566 680827 752493 1003324 1167132 1361654 1504986 2042481 2723308 3009972 4084962 4765789 8169924 9531578 14297367 19063156 28594734 57189468