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87030241 = 1924912
BaseRepresentation
bin1010010111111…
…11100111100001
320001202121001021
411023333213201
5134234431431
612345205441
72104513324
oct513774741
9201677037
1087030241
1145143121
1225190881
13150522ac
14b7b67bb
157991b11
hex52ff9e1

87030241 has 9 divisors (see below), whose sum is σ = 92039313. Its totient is φ = 82281780.

The previous prime is 87030221. The next prime is 87030283. The reversal of 87030241 is 14203078.

The square root of 87030241 is 9329.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 87030241 - 29 = 87029729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 177006 + ... + 177496.

Almost surely, 287030241 is an apocalyptic number.

87030241 is the 9329-th square number.

87030241 is the 4665-th centered octagonal number.

It is an amenable number.

87030241 is a deficient number, since it is larger than the sum of its proper divisors (5009072).

87030241 is an frugal number, since it uses more digits than its factorization.

87030241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The cubic root of 87030241 is about 443.1560969541.

Multiplying 87030241 by its sum of digits (25), we get a square (2175756025 = 466452).

The spelling of 87030241 in words is "eighty-seven million, thirty thousand, two hundred forty-one".

Divisors: 1 19 361 491 9329 177251 241081 4580539 87030241