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300160021 = 7378111429
BaseRepresentation
bin10001111001000…
…001010000010101
3202220210201010211
4101321001100111
51103320110041
645441245421
710303214050
oct2171012025
9686721124
10300160021
11144483737
1284633871
134a2558a5
142bc15a97
151b541481
hex11e41415

300160021 has 16 divisors (see below), whose sum is σ = 352992640. Its totient is φ = 249842880.

The previous prime is 300159997. The next prime is 300160027. The reversal of 300160021 is 120061003.

It is not a de Polignac number, because 300160021 - 25 = 300159989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 300159983 and 300160010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300160027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209335 + ... + 210763.

It is an arithmetic number, because the mean of its divisors is an integer number (22062040).

Almost surely, 2300160021 is an apocalyptic number.

300160021 is the 10003-rd octagonal number.

It is an amenable number.

300160021 is a deficient number, since it is larger than the sum of its proper divisors (52832619).

300160021 is a wasteful number, since it uses less digits than its factorization.

300160021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 300160021 is about 17325.1268682224. The cubic root of 300160021 is about 669.5519548478.

The spelling of 300160021 in words is "three hundred million, one hundred sixty thousand, twenty-one".

Divisors: 1 7 37 259 811 1429 5677 10003 30007 52873 210049 370111 1158919 8112433 42880003 300160021