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2689229721 = 3953940619
BaseRepresentation
bin1010000001001010…
…0110001110011001
320221102021000122210
42200102212032121
521001420322341
61122503305333
7123433034613
oct24022461631
96842230583
102689229721
111160000102
1263074b249
1333b1b53b9
141b722bdb3
1510b158c16
hexa04a6399

2689229721 has 8 divisors (see below), whose sum is σ = 3589405920. Its totient is φ = 1790936672.

The previous prime is 2689229693. The next prime is 2689229723. The reversal of 2689229721 is 1279229862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2689229721 - 218 = 2688967577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2689229723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 467451 + ... + 473168.

It is an arithmetic number, because the mean of its divisors is an integer number (448675740).

Almost surely, 22689229721 is an apocalyptic number.

It is an amenable number.

2689229721 is a deficient number, since it is larger than the sum of its proper divisors (900176199).

2689229721 is an equidigital number, since it uses as much as digits as its factorization.

2689229721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941575.

The product of its digits is 435456, while the sum is 48.

The square root of 2689229721 is about 51857.7836105632. The cubic root of 2689229721 is about 1390.6226565300.

The spelling of 2689229721 in words is "two billion, six hundred eighty-nine million, two hundred twenty-nine thousand, seven hundred twenty-one".

Divisors: 1 3 953 2859 940619 2821857 896409907 2689229721