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87500050 = 25211236917
BaseRepresentation
bin1010011011100…
…10010100010010
320002122110111121
411031302110102
5134400000200
612403232454
72111511121
oct515622422
9202573447
1087500050
11454340a0
122537872a
13151880a1
14b899ab8
157a35e1a
hex5372512

87500050 has 48 divisors (see below), whose sum is σ = 185291712. Its totient is φ = 30430400.

The previous prime is 87500029. The next prime is 87500053. The reversal of 87500050 is 5000578.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 87499988 and 87500024.

It is not an unprimeable number, because it can be changed into a prime (87500053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9192 + ... + 16108.

It is an arithmetic number, because the mean of its divisors is an integer number (3860244).

Almost surely, 287500050 is an apocalyptic number.

87500050 is an abundant number, since it is smaller than the sum of its proper divisors (97791662).

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

87500050 is a wasteful number, since it uses less digits than its factorization.

87500050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963 (or 6958 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 87500050 is about 9354.1461395469. The cubic root of 87500050 is about 443.9520854336.

The spelling of 87500050 in words is "eighty-seven million, five hundred thousand, fifty".

Divisors: 1 2 5 10 11 22 23 25 46 50 55 110 115 230 253 275 506 550 575 1150 1265 2530 6325 6917 12650 13834 34585 69170 76087 152174 159091 172925 318182 345850 380435 760870 795455 1590910 1750001 1902175 3500002 3804350 3977275 7954550 8750005 17500010 43750025 87500050