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87704371 = 412139131
BaseRepresentation
bin1010011101001…
…00001100110011
320010000211210001
411032210030303
5134423014441
612411450431
72113321606
oct516441463
9203024701
1087704371
1145563657
1225456a17
131522a0a1
14b91033d
157a76731
hex53a4333

87704371 has 4 divisors (see below), whose sum is σ = 89843544. Its totient is φ = 85565200.

The previous prime is 87704341. The next prime is 87704389. The reversal of 87704371 is 17340778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87704371 - 219 = 87180083 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 87704371.

It is not an unprimeable number, because it can be changed into a prime (87704321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069525 + ... + 1069606.

It is an arithmetic number, because the mean of its divisors is an integer number (22460886).

Almost surely, 287704371 is an apocalyptic number.

87704371 is a deficient number, since it is larger than the sum of its proper divisors (2139173).

87704371 is a wasteful number, since it uses less digits than its factorization.

87704371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139172.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 87704371 is about 9365.0611850644. The cubic root of 87704371 is about 444.2973736971.

The spelling of 87704371 in words is "eighty-seven million, seven hundred four thousand, three hundred seventy-one".

Divisors: 1 41 2139131 87704371