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202542013520 = 245721116328817
BaseRepresentation
bin1011110010100001110…
…0011101110001010000
3201100210111112100111022
42330220130131301100
511304301223413040
6233014014135012
720430115465100
oct2745034356120
9640714470438
10202542013520
1178996760620
1233306ab1468
131613ab6b7a2
149b3594b200
1554066ed6b5
hex2f2871dc50

202542013520 has 240 divisors, whose sum is σ = 601279962048. Its totient is φ = 62740500480.

The previous prime is 202542013519. The next prime is 202542013561. The reversal of 202542013520 is 25310245202.

It is a self number, because there is not a number n which added to its sum of digits gives 202542013520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7014152 + ... + 7042968.

Almost surely, 2202542013520 is an apocalyptic number.

202542013520 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 202542013520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300639981024).

202542013520 is an abundant number, since it is smaller than the sum of its proper divisors (398737948528).

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

202542013520 is a wasteful number, since it uses less digits than its factorization.

202542013520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29018 (or 29005 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 202542013520 its reverse (25310245202), we get a palindrome (227852258722).

The spelling of 202542013520 in words is "two hundred two billion, five hundred forty-two million, thirteen thousand, five hundred twenty".