Search a number
-
+
1806065828 = 2272931157457
BaseRepresentation
bin110101110100110…
…0110000010100100
311122212102122112222
41223221212002210
512144323101303
6455114131512
762520210020
oct15351460244
94585378488
101806065828
11847527a96
12424a20b98
1322a235008
14131c15380
15a8855938
hex6ba660a4

1806065828 has 96 divisors (see below), whose sum is σ = 3890288640. Its totient is φ = 717050880.

The previous prime is 1806065819. The next prime is 1806065831. The reversal of 1806065828 is 8285606081.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3951776 + ... + 3952232.

It is an arithmetic number, because the mean of its divisors is an integer number (40523840).

Almost surely, 21806065828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806065828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1945144320).

1806065828 is an abundant number, since it is smaller than the sum of its proper divisors (2084222812).

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

1806065828 is a wasteful number, since it uses less digits than its factorization.

1806065828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 1806065828 is about 42497.8332153535. The cubic root of 1806065828 is about 1217.8052963723.

The spelling of 1806065828 in words is "one billion, eight hundred six million, sixty-five thousand, eight hundred twenty-eight".

Divisors: 1 2 4 7 14 28 29 31 58 62 116 124 157 203 217 314 406 434 457 628 812 868 899 914 1099 1798 1828 2198 3199 3596 4396 4553 4867 6293 6398 9106 9734 12586 12796 13253 14167 18212 19468 25172 26506 28334 31871 34069 53012 56668 63742 68138 71749 92771 99169 127484 136276 141143 143498 185542 198338 282286 286996 371084 396676 410843 502243 564572 821686 988001 1004486 1643372 1976002 2008972 2080721 2224219 2875901 3952004 4161442 4448438 5751802 8322884 8896876 11503604 14565047 15569533 29130094 31139066 58260188 62278132 64502351 129004702 258009404 451516457 903032914 1806065828