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87042448 = 2417320009
BaseRepresentation
bin1010011000000…
…10100110010000
320001210012210101
411030002212100
5134240324243
612345342144
72104564033
oct514024620
9201705711
1087042448
1145151309
1225197954
1315057a0c
14b7bb01a
15799554d
hex5302990

87042448 has 20 divisors (see below), whose sum is σ = 178565580. Its totient is φ = 40961024.

The previous prime is 87042407. The next prime is 87042479. The reversal of 87042448 is 84424078.

It can be written as a sum of positive squares in 2 ways, for example, as 79709184 + 7333264 = 8928^2 + 2708^2 .

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, 159733 + ... + 160276.

It is an arithmetic number, because the mean of its divisors is an integer number (8928279).

Almost surely, 287042448 is an apocalyptic number.

It is an amenable number.

87042448 is an abundant number, since it is smaller than the sum of its proper divisors (91523132).

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

87042448 is a wasteful number, since it uses less digits than its factorization.

87042448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320034 (or 320028 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 87042448 is about 9329.6542272477. The cubic root of 87042448 is about 443.1768152451.

The spelling of 87042448 in words is "eighty-seven million, forty-two thousand, four hundred forty-eight".

Divisors: 1 2 4 8 16 17 34 68 136 272 320009 640018 1280036 2560072 5120144 5440153 10880306 21760612 43521224 87042448