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87157343 = 713957773
BaseRepresentation
bin1010011000111…
…10101001011111
320002000001101202
411030132221133
5134303013333
612352030115
72105553020
oct514365137
9202001352
1087157343
114521a669
122523233b
13150980c0
14b80ac47
1579b95e8
hex531ea5f

87157343 has 8 divisors (see below), whose sum is σ = 107270688. Its totient is φ = 68959584.

The previous prime is 87157321. The next prime is 87157379. The reversal of 87157343 is 34375178.

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 87157343 - 220 = 86108767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87157297 and 87157306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87157643) 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, 478796 + ... + 478977.

It is an arithmetic number, because the mean of its divisors is an integer number (13408836).

Almost surely, 287157343 is an apocalyptic number.

87157343 is a deficient number, since it is larger than the sum of its proper divisors (20113345).

87157343 is a wasteful number, since it uses less digits than its factorization.

87157343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957793.

The product of its digits is 70560, while the sum is 38.

The square root of 87157343 is about 9335.8097131422. The cubic root of 87157343 is about 443.3717255588.

The spelling of 87157343 in words is "eighty-seven million, one hundred fifty-seven thousand, three hundred forty-three".

Divisors: 1 7 13 91 957773 6704411 12451049 87157343