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380064280 = 2357321783
BaseRepresentation
bin10110101001110…
…101001000011000
3222111011021011211
4112221311020120
51234244024110
6101414032504
712263331061
oct2651651030
9874137154
10380064280
11185599a12
12a7348734
136098150b
1438695568
152357698a
hex16a75218

380064280 has 48 divisors (see below), whose sum is σ = 867505680. Its totient is φ = 149859072.

The previous prime is 380064271. The next prime is 380064299. The reversal of 380064280 is 82460083.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212269 + ... + 214051.

It is an arithmetic number, because the mean of its divisors is an integer number (18073035).

Almost surely, 2380064280 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 380064280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433752840).

380064280 is an abundant number, since it is smaller than the sum of its proper divisors (487441400).

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

380064280 is a wasteful number, since it uses less digits than its factorization.

380064280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 380064280 is about 19495.2373671110. The cubic root of 380064280 is about 724.3564832780.

The spelling of 380064280 in words is "three hundred eighty million, sixty-four thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 73 146 292 365 584 730 1460 1783 2920 3566 5329 7132 8915 10658 14264 17830 21316 26645 35660 42632 53290 71320 106580 130159 213160 260318 520636 650795 1041272 1301590 2603180 5206360 9501607 19003214 38006428 47508035 76012856 95016070 190032140 380064280