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1805230144 = 264721132
BaseRepresentation
bin110101110011001…
…1010000001000000
311122210212012012201
41223212122001000
512144114331034
6455044202544
762510126434
oct15346320100
94583765181
101805230144
11847007143
12424699454
1322a001823
14131a789c4
15a873d014
hex6b99a040

1805230144 has 63 divisors (see below), whose sum is σ = 3692770237. Its totient is φ = 875592704.

The previous prime is 1805230081. The next prime is 1805230243. The reversal of 1805230144 is 4410325081.

The square root of 1805230144 is 42488.

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

It can be written as a sum of positive squares in only one way, i.e., 31809600 + 1773420544 = 5640^2 + 42112^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15975432 + ... + 15975544.

Almost surely, 21805230144 is an apocalyptic number.

1805230144 is the 42488-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1805230144

1805230144 is an abundant number, since it is smaller than the sum of its proper divisors (1887540093).

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

1805230144 is an frugal number, since it uses more digits than its factorization.

1805230144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The cubic root of 1805230144 is about 1217.6174373267.

The spelling of 1805230144 in words is "one billion, eight hundred five million, two hundred thirty thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 32 47 64 94 113 188 226 376 452 752 904 1504 1808 2209 3008 3616 4418 5311 7232 8836 10622 12769 17672 21244 25538 35344 42488 51076 70688 84976 102152 141376 169952 204304 249617 339904 408608 499234 600143 817216 998468 1200286 1996936 2400572 3993872 4801144 7987744 9602288 15975488 19204576 28206721 38409152 56413442 112826884 225653768 451307536 902615072 1805230144