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57440754 = 23274111119
BaseRepresentation
bin1101101100011…
…1100111110010
311000002021220100
43123013213302
5104201101004
65411053230
71265144520
oct333074762
9130067810
1057440754
112a4730a8
12172a1216
13bb92117
1478b3310
155099739
hex36c79f2

57440754 has 48 divisors (see below), whose sum is σ = 145716480. Its totient is φ = 16009920.

The previous prime is 57440723. The next prime is 57440759. The reversal of 57440754 is 45704475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57440759) 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, 394 + ... + 10725.

It is an arithmetic number, because the mean of its divisors is an integer number (3035760).

Almost surely, 257440754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57440754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72858240).

57440754 is an abundant number, since it is smaller than the sum of its proper divisors (88275726).

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

57440754 is a wasteful number, since it uses less digits than its factorization.

57440754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175 (or 11172 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 57440754 is about 7578.9678716828. The cubic root of 57440754 is about 385.8395218258.

It can be divided in two parts, 574 and 40754, that added together give a triangular number (41328 = T287).

The spelling of 57440754 in words is "fifty-seven million, four hundred forty thousand, seven hundred fifty-four".

Divisors: 1 2 3 6 7 9 14 18 21 41 42 63 82 123 126 246 287 369 574 738 861 1722 2583 5166 11119 22238 33357 66714 77833 100071 155666 200142 233499 455879 466998 700497 911758 1367637 1400994 2735274 3191153 4102911 6382306 8205822 9573459 19146918 28720377 57440754