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87242341 = 819110651
BaseRepresentation
bin1010011001100…
…11011001100101
320002011100222211
411030303121211
5134313223331
612353523421
72106355564
oct514633145
9202140884
1087242341
114527850a
1225273571
13150c79b4
14b82dbdb
1579d48b1
hex5333665

87242341 has 4 divisors (see below), whose sum is σ = 87261184. Its totient is φ = 87223500.

The previous prime is 87242333. The next prime is 87242371. The reversal of 87242341 is 14324278.

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 87242341 - 23 = 87242333 is a prime.

It is a super-2 number, since 2×872423412 = 15222452126320562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87242321) 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, 2866 + ... + 13516.

It is an arithmetic number, because the mean of its divisors is an integer number (21815296).

Almost surely, 287242341 is an apocalyptic number.

It is an amenable number.

87242341 is a deficient number, since it is larger than the sum of its proper divisors (18843).

87242341 is a wasteful number, since it uses less digits than its factorization.

87242341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18842.

The product of its digits is 10752, while the sum is 31.

The square root of 87242341 is about 9340.3608602666. The cubic root of 87242341 is about 443.5158077615.

The spelling of 87242341 in words is "eighty-seven million, two hundred forty-two thousand, three hundred forty-one".

Divisors: 1 8191 10651 87242341