Search a number
-
+
1230380 = 22561519
BaseRepresentation
bin100101100011000101100
32022111202122
410230120230
5303333010
642212112
713313054
oct4543054
92274678
101230380
11770448
124b4038
13341048
14240564
15194855
hex12c62c

1230380 has 12 divisors (see below), whose sum is σ = 2583840. Its totient is φ = 492144.

The previous prime is 1230379. The next prime is 1230391. The reversal of 1230380 is 830321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30740 + ... + 30779.

It is an arithmetic number, because the mean of its divisors is an integer number (215320).

21230380 is an apocalyptic number.

1230380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230380 is an abundant number, since it is smaller than the sum of its proper divisors (1353460).

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

1230380 is a wasteful number, since it uses less digits than its factorization.

1230380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61528 (or 61526 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1230380 is about 1109.2249546418. The cubic root of 1230380 is about 107.1551596455.

The spelling of 1230380 in words is "one million, two hundred thirty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 61519 123038 246076 307595 615190 1230380