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87346940 = 22511233889
BaseRepresentation
bin1010011010011…
…00111011111100
320002100200110212
411031030323330
5134330100230
612400051552
72110302542
oct515147374
9202320425
1087346940
114533a05a
1225303bb8
13151334a5
14b859d92
157a05895
hex534cefc

87346940 has 24 divisors (see below), whose sum is σ = 183639120. Its totient is φ = 34898688.

The previous prime is 87346879. The next prime is 87346957. The reversal of 87346940 is 4964378.

It is a congruent number.

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, 20516 + ... + 24404.

It is an arithmetic number, because the mean of its divisors is an integer number (7651630).

Almost surely, 287346940 is an apocalyptic number.

It is an amenable number.

87346940 is an abundant number, since it is smaller than the sum of its proper divisors (96292180).

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

87346940 is a wasteful number, since it uses less digits than its factorization.

87346940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 87346940 is about 9345.9584848211. The cubic root of 87346940 is about 443.6929877161.

The spelling of 87346940 in words is "eighty-seven million, three hundred forty-six thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 1123 2246 3889 4492 5615 7778 11230 15556 19445 22460 38890 77780 4367347 8734694 17469388 21836735 43673470 87346940