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57025020 = 223513292521
BaseRepresentation
bin1101100110001…
…0000111111100
310222022011121210
43121202013330
5104044300040
65354124420
71261463463
oct331420774
9128264553
1057025020
112a209818
1217120710
13ba77b20
1478059da
155016480
hex36621fc

57025020 has 96 divisors (see below), whose sum is σ = 177952320. Its totient is φ = 13547520.

The previous prime is 57025019. The next prime is 57025037. The reversal of 57025020 is 2052075.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21360 + ... + 23880.

It is an arithmetic number, because the mean of its divisors is an integer number (1853670).

Almost surely, 257025020 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 57025020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88976160).

57025020 is an abundant number, since it is smaller than the sum of its proper divisors (120927300).

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

57025020 is a wasteful number, since it uses less digits than its factorization.

57025020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 57025020 is about 7551.4912434565. The cubic root of 57025020 is about 384.9064145388.

Adding to 57025020 its reverse (2052075), we get a palindrome (59077095).

The spelling of 57025020 in words is "fifty-seven million, twenty-five thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 29 30 39 52 58 60 65 78 87 116 130 145 156 174 195 260 290 348 377 390 435 580 754 780 870 1131 1508 1740 1885 2262 2521 3770 4524 5042 5655 7540 7563 10084 11310 12605 15126 22620 25210 30252 32773 37815 50420 65546 73109 75630 98319 131092 146218 151260 163865 196638 219327 292436 327730 365545 393276 438654 491595 655460 731090 877308 950417 983190 1096635 1462180 1900834 1966380 2193270 2851251 3801668 4386540 4752085 5702502 9504170 11405004 14256255 19008340 28512510 57025020