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2987698580 = 225149384929
BaseRepresentation
bin1011001000010100…
…1010100110010100
321201012212210221222
42302011022212110
522104322323310
61212244425512
7134016006326
oct26205124624
97635783858
102987698580
1112a3529189
126b46a8298
13387c982a9
14204b23616
15127464055
hexb214a994

2987698580 has 12 divisors (see below), whose sum is σ = 6274167060. Its totient is φ = 1195079424.

The previous prime is 2987698573. The next prime is 2987698613. The reversal of 2987698580 is 858967892.

It can be written as a sum of positive squares in 2 ways, for example, as 1124395024 + 1863303556 = 33532^2 + 43166^2 .

It is a super-3 number, since 3×29876985803 (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 74692445 + ... + 74692484.

It is an arithmetic number, because the mean of its divisors is an integer number (522847255).

Almost surely, 22987698580 is an apocalyptic number.

2987698580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2987698580 is an abundant number, since it is smaller than the sum of its proper divisors (3286468480).

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

2987698580 is a wasteful number, since it uses less digits than its factorization.

2987698580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149384938 (or 149384936 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The square root of 2987698580 is about 54659.8443100600. The cubic root of 2987698580 is about 1440.2755677612.

The spelling of 2987698580 in words is "two billion, nine hundred eighty-seven million, six hundred ninety-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 149384929 298769858 597539716 746924645 1493849290 2987698580