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2020040540 = 225745731573
BaseRepresentation
bin111100001100111…
…0101111101011100
312012210001200200022
41320121311331130
513114112244130
6532240251312
7101026030010
oct17031657534
95183050608
102020040540
119472953a1
12484610b38
1326267307b
141523d4540
15bc5207e5
hex78675f5c

2020040540 has 48 divisors (see below), whose sum is σ = 4858859712. Its totient is φ = 691047936.

The previous prime is 2020040513. The next prime is 2020040543. The reversal of 2020040540 is 450400202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020040543) 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 15 ways as a sum of consecutive naturals, for example, 48194 + ... + 79766.

It is an arithmetic number, because the mean of its divisors is an integer number (101226244).

Almost surely, 22020040540 is an apocalyptic number.

2020040540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020040540 is an abundant number, since it is smaller than the sum of its proper divisors (2838819172).

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

2020040540 is a wasteful number, since it uses less digits than its factorization.

2020040540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32046 (or 32044 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2020040540 is about 44944.8611078063. The cubic root of 2020040540 is about 1264.1153213896.

Adding to 2020040540 its reverse (450400202), we get a palindrome (2470440742).

The spelling of 2020040540 in words is "two billion, twenty million, forty thousand, five hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 457 914 1828 2285 3199 4570 6398 9140 12796 15995 31573 31990 63146 63980 126292 157865 221011 315730 442022 631460 884044 1105055 2210110 4420220 14428861 28857722 57715444 72144305 101002027 144288610 202004054 288577220 404008108 505010135 1010020270 2020040540