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57780241000 = 235357780241
BaseRepresentation
bin110101110011111110…
…001000001001101000
312112010210201100211221
4311303332020021220
51421313220203000
642313251031424
74113563642056
oct656376101150
9175123640757
1057780241000
1122560492299
12b24659b574
1355aa8cb021
142b21b511d6
15178293161a
hexd73f88268

57780241000 has 32 divisors (see below), whose sum is σ = 135205766280. Its totient is φ = 23112096000.

The previous prime is 57780240997. The next prime is 57780241003. The reversal of 57780241000 is 14208775.

It is a happy number.

57780241000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57780240997) and next prime (57780241003).

It can be written as a sum of positive squares in 4 ways, for example, as 8610726436 + 49169514564 = 92794^2 + 221742^2 .

It is not an unprimeable number, because it can be changed into a prime (57780241003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28889121 + ... + 28891120.

Almost surely, 257780241000 is an apocalyptic number.

57780241000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57780241000 is an abundant number, since it is smaller than the sum of its proper divisors (77425525280).

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

57780241000 is a wasteful number, since it uses less digits than its factorization.

57780241000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57780262 (or 57780248 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

Adding to 57780241000 its reverse (14208775), we get a palindrome (57794449775).

The spelling of 57780241000 in words is "fifty-seven billion, seven hundred eighty million, two hundred forty-one thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 57780241 115560482 231120964 288901205 462241928 577802410 1155604820 1444506025 2311209640 2889012050 5778024100 7222530125 11556048200 14445060250 28890120500 57780241000