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87652133 = 471864939
BaseRepresentation
bin1010011100101…
…11011100100101
320002221012010022
411032113130211
5134414332013
612410404525
72113013402
oct516273445
9202835108
1087652133
1145528388
1225430745
131520c38a
14b8d92a9
157a66008
hex5397725

87652133 has 4 divisors (see below), whose sum is σ = 89517120. Its totient is φ = 85787148.

The previous prime is 87652129. The next prime is 87652151. The reversal of 87652133 is 33125678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87652133 - 22 = 87652129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87652093 and 87652102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87657133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932423 + ... + 932516.

It is an arithmetic number, because the mean of its divisors is an integer number (22379280).

Almost surely, 287652133 is an apocalyptic number.

It is an amenable number.

87652133 is a deficient number, since it is larger than the sum of its proper divisors (1864987).

87652133 is a wasteful number, since it uses less digits than its factorization.

87652133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864986.

The product of its digits is 30240, while the sum is 35.

The square root of 87652133 is about 9362.2717862707. The cubic root of 87652133 is about 444.2091461839.

The spelling of 87652133 in words is "eighty-seven million, six hundred fifty-two thousand, one hundred thirty-three".

Divisors: 1 47 1864939 87652133