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200731041280 = 29571131107307
BaseRepresentation
bin1011101011110010000…
…0001001111000000000
3201012010021212102121101
42322330200021320000
511242044121310110
6232114202504144
720334205461460
oct2727440117000
9635107772541
10200731041280
1178147492350
1232aa0505054
1315c0c909493
149a03219ba0
15534c72913a
hex2ebc809e00

200731041280 has 640 divisors, whose sum is σ = 627223855104. Its totient is φ = 59786035200.

The previous prime is 200731041233. The next prime is 200731041281. The reversal of 200731041280 is 82140137002.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200731041281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 653846887 + ... + 653847193.

Almost surely, 2200731041280 is an apocalyptic number.

200731041280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200731041280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313611927552).

200731041280 is an abundant number, since it is smaller than the sum of its proper divisors (426492813824).

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

200731041280 is a wasteful number, since it uses less digits than its factorization.

200731041280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 200731041280 its reverse (82140137002), we get a palindrome (282871178282).

The spelling of 200731041280 in words is "two hundred billion, seven hundred thirty-one million, forty-one thousand, two hundred eighty".