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87207007 = 2323316273
BaseRepresentation
bin1010011001010…
…10110001011111
320002002120112011
411030222301133
5134311111012
612353052051
72106150556
oct514526137
9202076464
1087207007
1145253a08
1225257027
13150b48a4
14b820d9d
1579c91a7
hex532ac5f

87207007 has 8 divisors (see below), whose sum is σ = 91394784. Its totient is φ = 83052288.

The previous prime is 87206989. The next prime is 87207019. The reversal of 87207007 is 70070278.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87207007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87207007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87207047) 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, 2778 + ... + 13495.

It is an arithmetic number, because the mean of its divisors is an integer number (11424348).

Almost surely, 287207007 is an apocalyptic number.

87207007 is a deficient number, since it is larger than the sum of its proper divisors (4187777).

87207007 is a wasteful number, since it uses less digits than its factorization.

87207007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16529.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 87207007 is about 9338.4692000349. The cubic root of 87207007 is about 443.4559235986.

The spelling of 87207007 in words is "eighty-seven million, two hundred seven thousand, seven".

Divisors: 1 23 233 5359 16273 374279 3791609 87207007