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87418073 = 4713913381
BaseRepresentation
bin1010011010111…
…10010011011001
320002111022001102
411031132103121
5134334334243
612401401145
72111020121
oct515362331
9202438042
1087418073
1145388546
12253391b5
1315159992
14b877c81
157a1b9b8
hex535e4d9

87418073 has 8 divisors (see below), whose sum is σ = 89927040. Its totient is φ = 84936240.

The previous prime is 87418061. The next prime is 87418081. The reversal of 87418073 is 37081478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87418073 - 226 = 20309209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87418033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158 + ... + 13223.

It is an arithmetic number, because the mean of its divisors is an integer number (11240880).

Almost surely, 287418073 is an apocalyptic number.

It is an amenable number.

87418073 is a deficient number, since it is larger than the sum of its proper divisors (2508967).

87418073 is a wasteful number, since it uses less digits than its factorization.

87418073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13567.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 87418073 is about 9349.7632590350. The cubic root of 87418073 is about 443.8133989163.

The spelling of 87418073 in words is "eighty-seven million, four hundred eighteen thousand, seventy-three".

Divisors: 1 47 139 6533 13381 628907 1859959 87418073