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988769045 = 51121796137
BaseRepresentation
bin111010111011110…
…110101100010101
32112220112200010202
4322323312230111
54011111102140
6242040430245
733334253405
oct7273665425
92486480122
10988769045
11468152900
12237178385
13129b07254
1495466805
155bc13915
hex3aef6b15

988769045 has 24 divisors (see below), whose sum is σ = 1380926232. Its totient is φ = 676797440.

The previous prime is 988769029. The next prime is 988769071. The reversal of 988769045 is 540967889.

It can be written as a sum of positive squares in 4 ways, for example, as 375661924 + 613107121 = 19382^2 + 24761^2 .

It is not a de Polignac number, because 988769045 - 24 = 988769029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 37784 + ... + 58353.

It is an arithmetic number, because the mean of its divisors is an integer number (57538593).

Almost surely, 2988769045 is an apocalyptic number.

It is an amenable number.

988769045 is a deficient number, since it is larger than the sum of its proper divisors (392157187).

988769045 is a wasteful number, since it uses less digits than its factorization.

988769045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96181 (or 96170 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 988769045 is about 31444.6982017637. The cubic root of 988769045 is about 996.2422453004.

The spelling of 988769045 in words is "nine hundred eighty-eight million, seven hundred sixty-nine thousand, forty-five".

Divisors: 1 5 11 17 55 85 121 187 605 935 2057 10285 96137 480685 1057507 1634329 5287535 8171645 11632577 17977619 58162885 89888095 197753809 988769045