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87092040 = 23357103681
BaseRepresentation
bin1010011000011…
…10101101001000
320001212201211010
411030032231020
5134243421130
612350403520
72105161440
oct514165510
9201781733
1087092040
11451855a2
12252005a0
1315074469
14b7d1120
1579a50b0
hex530eb48

87092040 has 64 divisors (see below), whose sum is σ = 298604160. Its totient is φ = 19906560.

The previous prime is 87092011. The next prime is 87092059. The reversal of 87092040 is 4029078.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 87091989 and 87092007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51001 + ... + 52680.

It is an arithmetic number, because the mean of its divisors is an integer number (4665690).

Almost surely, 287092040 is an apocalyptic number.

It is an amenable number.

87092040 is an abundant number, since it is smaller than the sum of its proper divisors (211512120).

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

87092040 is a wasteful number, since it uses less digits than its factorization.

87092040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103702 (or 103698 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 87092040 is about 9332.3116107425. The cubic root of 87092040 is about 443.2609651914.

The spelling of 87092040 in words is "eighty-seven million, ninety-two thousand, forty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 103681 207362 311043 414724 518405 622086 725767 829448 1036810 1244172 1451534 1555215 2073620 2177301 2488344 2903068 3110430 3628835 4147240 4354602 5806136 6220860 7257670 8709204 10886505 12441720 14515340 17418408 21773010 29030680 43546020 87092040