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2148860720 = 24531186369
BaseRepresentation
bin1000000000010101…
…0000001100110000
312112202110102202002
42000011100030300
513400102020340
6553121313132
7104152005026
oct20005201460
95482412662
102148860720
11a02a80956
124bb7957a8
13283267826
14165568716
15c89b9715
hex80150330

2148860720 has 40 divisors (see below), whose sum is σ = 5012223840. Its totient is φ = 856770560.

The previous prime is 2148860713. The next prime is 2148860743. The reversal of 2148860720 is 270688412.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18305 + ... + 68064.

It is an arithmetic number, because the mean of its divisors is an integer number (125305596).

Almost surely, 22148860720 is an apocalyptic number.

2148860720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2148860720 is an abundant number, since it is smaller than the sum of its proper divisors (2863363120).

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

2148860720 is a wasteful number, since it uses less digits than its factorization.

2148860720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86693 (or 86687 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 2148860720 is about 46355.8056773906. The cubic root of 2148860720 is about 1290.4348673084.

The spelling of 2148860720 in words is "two billion, one hundred forty-eight million, eight hundred sixty thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 311 622 1244 1555 2488 3110 4976 6220 12440 24880 86369 172738 345476 431845 690952 863690 1381904 1727380 3454760 6909520 26860759 53721518 107443036 134303795 214886072 268607590 429772144 537215180 1074430360 2148860720