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87043107 = 347617327
BaseRepresentation
bin1010011000000…
…10110000100011
320001210020200210
411030002300203
5134240334412
612345345203
72104565664
oct514026043
9201706623
1087043107
1145151858
1225198203
13150580c8
14b7bb36b
15799583c
hex5302c23

87043107 has 8 divisors (see below), whose sum is σ = 118526976. Its totient is φ = 56793992.

The previous prime is 87043091. The next prime is 87043147. The reversal of 87043107 is 70134078.

It is a happy number.

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 87043107 - 24 = 87043091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87043147) 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, 308523 + ... + 308804.

It is an arithmetic number, because the mean of its divisors is an integer number (14815872).

Almost surely, 287043107 is an apocalyptic number.

87043107 is a deficient number, since it is larger than the sum of its proper divisors (31483869).

87043107 is a wasteful number, since it uses less digits than its factorization.

87043107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617377.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 87043107 is about 9329.6895446740. The cubic root of 87043107 is about 443.1779336756.

It can be divided in two parts, 8704 and 3107, that added together give a palindrome (11811).

The spelling of 87043107 in words is "eighty-seven million, forty-three thousand, one hundred seven".

Divisors: 1 3 47 141 617327 1851981 29014369 87043107