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87040648 = 23231074421
BaseRepresentation
bin1010011000000…
…10001010001000
320001210010022201
411030002022020
5134240300043
612345325544
72104555552
oct514021210
9201703281
1087040648
114514aa22
12251968b4
1315056c56
14b7ba4d2
157994c4d
hex5302288

87040648 has 32 divisors (see below), whose sum is σ = 171927360. Its totient is φ = 41229760.

The previous prime is 87040633. The next prime is 87040651. The reversal of 87040648 is 84604078.

It is a super-3 number, since 3×870406483 (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17478 + ... + 21898.

It is an arithmetic number, because the mean of its divisors is an integer number (5372730).

Almost surely, 287040648 is an apocalyptic number.

It is an amenable number.

87040648 is a deficient number, since it is larger than the sum of its proper divisors (84886712).

87040648 is a wasteful number, since it uses less digits than its factorization.

87040648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557 (or 4553 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 87040648 is about 9329.5577601513. The cubic root of 87040648 is about 443.1737603227.

The spelling of 87040648 in words is "eighty-seven million, forty thousand, six hundred forty-eight".

Divisors: 1 2 4 8 23 46 92 107 184 214 428 856 2461 4421 4922 8842 9844 17684 19688 35368 101683 203366 406732 473047 813464 946094 1892188 3784376 10880081 21760162 43520324 87040648