Search a number
-
+
87352980 = 2235111310181
BaseRepresentation
bin1010011010011…
…10011010010100
320002100222202120
411031032122110
5134330243410
612400135540
72110326261
oct515163224
9202328676
1087352980
1145343650
12253075b0
1315136170
14b85c268
157a07570
hex534e694

87352980 has 96 divisors (see below), whose sum is σ = 287376768. Its totient is φ = 19545600.

The previous prime is 87352949. The next prime is 87352997. The reversal of 87352980 is 8925378.

It is a super-2 number, since 2×873529802 = 15261086229760800, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3490 + ... + 13670.

It is an arithmetic number, because the mean of its divisors is an integer number (2993508).

Almost surely, 287352980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87352980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143688384).

87352980 is an abundant number, since it is smaller than the sum of its proper divisors (200023788).

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

87352980 is a wasteful number, since it uses less digits than its factorization.

87352980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217 (or 10215 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 87352980 is about 9346.2816135616. The cubic root of 87352980 is about 443.7032145345.

The spelling of 87352980 in words is "eighty-seven million, three hundred fifty-two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 11 12 13 15 20 22 26 30 33 39 44 52 55 60 65 66 78 110 130 132 143 156 165 195 220 260 286 330 390 429 572 660 715 780 858 1430 1716 2145 2860 4290 8580 10181 20362 30543 40724 50905 61086 101810 111991 122172 132353 152715 203620 223982 264706 305430 335973 397059 447964 529412 559955 610860 661765 671946 794118 1119910 1323530 1343892 1455883 1588236 1679865 1985295 2239820 2647060 2911766 3359730 3970590 4367649 5823532 6719460 7279415 7941180 8735298 14558830 17470596 21838245 29117660 43676490 87352980