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30171887210 = 253701381517
BaseRepresentation
bin11100000110011000…
…100111011001101010
32212212201201200022002
4130012120213121222
5443243000342320
621505532131002
72115454544513
oct340630473152
985781650262
1030171887210
1111883275483
125a20606a62
132acab883ca
1416631cda0a
15bb8c7d675
hex70662766a

30171887210 has 16 divisors (see below), whose sum is σ = 54311530536. Its totient is φ = 12068280768.

The previous prime is 30171887203. The next prime is 30171887219. The reversal of 30171887210 is 1278817103.

It can be written as a sum of positive squares in 4 ways, for example, as 14920378201 + 15251509009 = 122149^2 + 123497^2 .

It is not an unprimeable number, because it can be changed into a prime (30171887219) 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 7 ways as a sum of consecutive naturals, for example, 329372 + ... + 410888.

Almost surely, 230171887210 is an apocalyptic number.

30171887210 is a deficient number, since it is larger than the sum of its proper divisors (24139643326).

30171887210 is a wasteful number, since it uses less digits than its factorization.

30171887210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118537.

The product of its (nonzero) digits is 18816, while the sum is 38.

The spelling of 30171887210 in words is "thirty billion, one hundred seventy-one million, eight hundred eighty-seven thousand, two hundred ten".

Divisors: 1 2 5 10 37013 74026 81517 163034 185065 370130 407585 815170 3017188721 6034377442 15085943605 30171887210