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630087020 = 22531504351
BaseRepresentation
bin100101100011100…
…101110101101100
31121220121201220022
4211203211311230
52242300241040
6142304541312
721420436253
oct4543456554
91556551808
10630087020
112a3738782
12157021838
13a0701374
145d97979a
153a4b26b5
hex258e5d6c

630087020 has 12 divisors (see below), whose sum is σ = 1323182784. Its totient is φ = 252034800.

The previous prime is 630086993. The next prime is 630087049. The reversal of 630087020 is 20780036.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15752156 + ... + 15752195.

It is an arithmetic number, because the mean of its divisors is an integer number (110265232).

Almost surely, 2630087020 is an apocalyptic number.

It is an amenable number.

630087020 is an abundant number, since it is smaller than the sum of its proper divisors (693095764).

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

630087020 is a wasteful number, since it uses less digits than its factorization.

630087020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31504360 (or 31504358 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 630087020 is about 25101.5342160594. The cubic root of 630087020 is about 857.3013567472.

The spelling of 630087020 in words is "six hundred thirty million, eighty-seven thousand, twenty".

Divisors: 1 2 4 5 10 20 31504351 63008702 126017404 157521755 315043510 630087020