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20301000540 = 22352571316537
BaseRepresentation
bin10010111010000010…
…001010111101011100
31221101210220200100220
4102322002022331130
5313034024004130
613154240521340
71316035441332
oct227202127534
957353820326
1020301000540
1186784271a7
123b26920250
131bb6b65c72
14da8279b52
157dc3c6410
hex4ba08af5c

20301000540 has 48 divisors (see below), whose sum is σ = 57064023072. Its totient is φ = 5392531456.

The previous prime is 20301000523. The next prime is 20301000541. The reversal of 20301000540 is 4500010302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301000541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642849 + ... + 673688.

It is an arithmetic number, because the mean of its divisors is an integer number (1188833814).

Almost surely, 220301000540 is an apocalyptic number.

20301000540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301000540 is an abundant number, since it is smaller than the sum of its proper divisors (36763022532).

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

20301000540 is a wasteful number, since it uses less digits than its factorization.

20301000540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316806 (or 1316804 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 20301000540 its reverse (4500010302), we get a palindrome (24801010842).

The spelling of 20301000540 in words is "twenty billion, three hundred one million, five hundred forty", and thus it is an aban number.

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 257 514 771 1028 1285 1542 2570 3084 3855 5140 7710 15420 1316537 2633074 3949611 5266148 6582685 7899222 13165370 15798444 19748055 26330740 39496110 78992220 338350009 676700018 1015050027 1353400036 1691750045 2030100054 3383500090 4060200108 5075250135 6767000180 10150500270 20301000540