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87207252387 = 3231263873223
BaseRepresentation
bin101000100110111110…
…1010001000110100011
322100002121211102121120
41101031331101012203
52412100024034022
6104021254023323
76205035262143
oct1211575210643
9270077742546
1087207252387
1133a91247512
1214a99647b43
1382ba3640b8
144314044923
1524060c5d5c
hex144df511a3

87207252387 has 8 divisors (see below), whose sum is σ = 121331829504. Its totient is φ = 55610421768.

The previous prime is 87207252371. The next prime is 87207252389. The reversal of 87207252387 is 78325270278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87207252387 - 24 = 87207252371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87207252389) 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, 631936543 + ... + 631936680.

It is an arithmetic number, because the mean of its divisors is an integer number (15166478688).

Almost surely, 287207252387 is an apocalyptic number.

87207252387 is a deficient number, since it is larger than the sum of its proper divisors (34124577117).

87207252387 is a wasteful number, since it uses less digits than its factorization.

87207252387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263873249.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 87207252387 in words is "eighty-seven billion, two hundred seven million, two hundred fifty-two thousand, three hundred eighty-seven".

Divisors: 1 3 23 69 1263873223 3791619669 29069084129 87207252387