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1380068180 = 225377126267
BaseRepresentation
bin101001001000010…
…0010101101010100
310120011211201122022
41102100202231110
510311244140210
6344535352312
746125246251
oct12220425524
93504751568
101380068180
11649015717
12326222698
1318cbc03ba
14d1404428
1581259155
hex52422b54

1380068180 has 48 divisors (see below), whose sum is σ = 3018508416. Its totient is φ = 529522560.

The previous prime is 1380068171. The next prime is 1380068197. The reversal of 1380068180 is 818600831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380068180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39407 + ... + 65673.

It is an arithmetic number, because the mean of its divisors is an integer number (62885592).

Almost surely, 21380068180 is an apocalyptic number.

1380068180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380068180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509254208).

1380068180 is an abundant number, since it is smaller than the sum of its proper divisors (1638440236).

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

1380068180 is a wasteful number, since it uses less digits than its factorization.

1380068180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26384 (or 26382 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 1380068180 is about 37149.2689026312. The cubic root of 1380068180 is about 1113.3546163078.

The spelling of 1380068180 in words is "one billion, three hundred eighty million, sixty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 37 71 74 142 148 185 284 355 370 710 740 1420 2627 5254 10508 13135 26267 26270 52534 52540 105068 131335 262670 525340 971879 1864957 1943758 3729914 3887516 4859395 7459828 9324785 9718790 18649570 19437580 37299140 69003409 138006818 276013636 345017045 690034090 1380068180