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2028558841 = 431011972371
BaseRepresentation
bin111100011101001…
…0101100111111001
312020101002110120221
41320322111213321
513123302340331
6533143020041
7101161315501
oct17072254771
95211073527
102028558841
11951083311
1248743a621
1326436639a
141535b0a01
15bd154711
hex78e959f9

2028558841 has 16 divisors (see below), whose sum is σ = 2107816128. Its totient is φ = 1950984000.

The previous prime is 2028558839. The next prime is 2028558887. The reversal of 2028558841 is 1488558202.

It is a 3-Lehmer number, since φ(2028558841) divides (2028558841-1)3.

It is a cyclic number.

It is not a de Polignac number, because 2028558841 - 21 = 2028558839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a deceptive number, since it divides R2028558840.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028558241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854386 + ... + 856756.

It is an arithmetic number, because the mean of its divisors is an integer number (131738508).

Almost surely, 22028558841 is an apocalyptic number.

It is an amenable number.

2028558841 is a deficient number, since it is larger than the sum of its proper divisors (79257287).

2028558841 is a wasteful number, since it uses less digits than its factorization.

2028558841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712.

The product of its (nonzero) digits is 204800, while the sum is 43.

The square root of 2028558841 is about 45039.5253194347. The cubic root of 2028558841 is about 1265.8897105576.

The spelling of 2028558841 in words is "two billion, twenty-eight million, five hundred fifty-eight thousand, eight hundred forty-one".

Divisors: 1 43 101 197 2371 4343 8471 19897 101953 239471 467087 855571 10297253 20084741 47175787 2028558841