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2144214390 = 23571473813
BaseRepresentation
bin111111111001110…
…0001110101110110
312112102201101011210
41333303201311312
513342404330030
6552433542250
7104064343623
oct17763416566
95472641153
102144214390
11a0039800a
124ba114986
132822cba16
14164ab934a
15c839cbb0
hex7fce1d76

2144214390 has 16 divisors (see below), whose sum is σ = 5146114608. Its totient is φ = 571790496.

The previous prime is 2144214379. The next prime is 2144214407. The reversal of 2144214390 is 934124412.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 71473813 = 2144214390 / (2 + 1 + 4 + 4 + 2 + 1 + 4 + 3 + 9 + 0).

It is a congruent number.

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, 35736877 + ... + 35736936.

It is an arithmetic number, because the mean of its divisors is an integer number (321632163).

Almost surely, 22144214390 is an apocalyptic number.

2144214390 is an abundant number, since it is smaller than the sum of its proper divisors (3001900218).

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

2144214390 is a wasteful number, since it uses less digits than its factorization.

2144214390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71473823.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2144214390 is about 46305.6626126870. The cubic root of 2144214390 is about 1289.5041240543.

The spelling of 2144214390 in words is "two billion, one hundred forty-four million, two hundred fourteen thousand, three hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 71473813 142947626 214421439 357369065 428842878 714738130 1072107195 2144214390