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87121471300 = 2252871214713
BaseRepresentation
bin101000100100011011…
…0000010011101000100
322022212122102022002021
41101020312002131010
52411411044040200
6104004551252524
76202644200413
oct1211066023504
9268778368067
1087121471300
1133a47887956
1214a7497a144
1382a565b566
1443068b547a
1523ed7ce41a
hex1448d82744

87121471300 has 18 divisors (see below), whose sum is σ = 189053592938. Its totient is φ = 34848588480.

The previous prime is 87121471279. The next prime is 87121471331. The reversal of 87121471300 is 317412178.

It can be written as a sum of positive squares in 3 ways, for example, as 2524258564 + 84597212736 = 50242^2 + 290856^2 .

It is a super-2 number, since 2×871214713002 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 435607257 + ... + 435607456.

Almost surely, 287121471300 is an apocalyptic number.

It is an amenable number.

87121471300 is an abundant number, since it is smaller than the sum of its proper divisors (101932121638).

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

87121471300 is a wasteful number, since it uses less digits than its factorization.

87121471300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871214727 (or 871214720 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

Adding to 87121471300 its reverse (317412178), we get a palindrome (87438883478).

The spelling of 87121471300 in words is "eighty-seven billion, one hundred twenty-one million, four hundred seventy-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 871214713 1742429426 3484858852 4356073565 8712147130 17424294260 21780367825 43560735650 87121471300