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308141420 = 22571217001
BaseRepresentation
bin10010010111011…
…101110101101100
3210110211012120012
4102113131311230
51112341011140
650324312352
710431105326
oct2227356554
9713735505
10308141420
11148a35234
12872426b8
134babb702
142ccd2616
151c0bb265
hex125ddd6c

308141420 has 24 divisors (see below), whose sum is σ = 656214048. Its totient is φ = 121520000.

The previous prime is 308141413. The next prime is 308141429. The reversal of 308141420 is 24141803.

It is a super-2 number, since 2×3081414202 = 189902269439232800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (308141429) 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, 107081 + ... + 109920.

It is an arithmetic number, because the mean of its divisors is an integer number (27342252).

Almost surely, 2308141420 is an apocalyptic number.

It is an amenable number.

308141420 is an abundant number, since it is smaller than the sum of its proper divisors (348072628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308141420 is a wasteful number, since it uses less digits than its factorization.

308141420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217081 (or 217079 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 308141420 is about 17553.9573885777. The cubic root of 308141420 is about 675.4346866313.

The spelling of 308141420 in words is "three hundred eight million, one hundred forty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 217001 434002 868004 1085005 2170010 4340020 15407071 30814142 61628284 77035355 154070710 308141420