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530020780 = 22526501039
BaseRepresentation
bin11111100101110…
…111100110101100
31100221022211211021
4133211313212230
52041141131110
6124332103524
716064050042
oct3745674654
91327284737
10530020780
11252201503
12129604ba4
1385a66683
145056c392
15317e82da
hex1f9779ac

530020780 has 12 divisors (see below), whose sum is σ = 1113043680. Its totient is φ = 212008304.

The previous prime is 530020727. The next prime is 530020783. The reversal of 530020780 is 87020035.

It is not an unprimeable number, because it can be changed into a prime (530020783) 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 3 ways as a sum of consecutive naturals, for example, 13250500 + ... + 13250539.

It is an arithmetic number, because the mean of its divisors is an integer number (92753640).

Almost surely, 2530020780 is an apocalyptic number.

It is an amenable number.

530020780 is an abundant number, since it is smaller than the sum of its proper divisors (583022900).

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

530020780 is a wasteful number, since it uses less digits than its factorization.

530020780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26501048 (or 26501046 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 530020780 is about 23022.1801747793. The cubic root of 530020780 is about 809.2778097795.

The spelling of 530020780 in words is "five hundred thirty million, twenty thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 26501039 53002078 106004156 132505195 265010390 530020780