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87030000000 = 273257967
BaseRepresentation
bin101000100001101100…
…1000110100110000000
322022122021022002001100
41101003121012212000
52411214140000000
6103551522534400
76200453536266
oct1210331064600
9268567262040
1087030000000
1133a00191139
1214a4a207400
13828c712a28
1442d86a4436
1523e5761a00
hex1443646980

87030000000 has 384 divisors, whose sum is σ = 313370291520. Its totient is φ = 23184000000.

The previous prime is 87029999999. The next prime is 87030000059. The reversal of 87030000000 is 3078.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-3 number, since 3×870300000003 (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89999517 + ... + 90000483.

Almost surely, 287030000000 is an apocalyptic number.

87030000000 is a gapful number since it is divisible by the number (80) 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 87030000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156685145760).

87030000000 is an abundant number, since it is smaller than the sum of its proper divisors (226340291520).

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

87030000000 is an frugal number, since it uses more digits than its factorization.

87030000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

Adding to 87030000000 its reverse (3078), we get a palindrome (87030003078).

The spelling of 87030000000 in words is "eighty-seven billion, thirty million", and thus it is an aban number and an uban number.