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87028448 = 2513209203
BaseRepresentation
bin1010010111111…
…11001011100000
320001202111120212
411023333023200
5134234402243
612345153252
72104505153
oct513771340
9201674525
1087028448
1145141841
122518b828
1315051530
14b7b5c9a
157991318
hex52ff2e0

87028448 has 24 divisors (see below), whose sum is σ = 184517928. Its totient is φ = 40166784.

The previous prime is 87028433. The next prime is 87028583. The reversal of 87028448 is 84482078.

It is a super-2 number, since 2×870284482 = 15147901522577408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104186 + ... + 105017.

It is an arithmetic number, because the mean of its divisors is an integer number (7688247).

Almost surely, 287028448 is an apocalyptic number.

It is an amenable number.

87028448 is an abundant number, since it is smaller than the sum of its proper divisors (97489480).

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

87028448 is a wasteful number, since it uses less digits than its factorization.

87028448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209226 (or 209218 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 87028448 is about 9328.9039013166. The cubic root of 87028448 is about 443.1530536275.

The spelling of 87028448 in words is "eighty-seven million, twenty-eight thousand, four hundred forty-eight".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 209203 418406 836812 1673624 2719639 3347248 5439278 6694496 10878556 21757112 43514224 87028448