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2020620840 = 2335722367223
BaseRepresentation
bin111100001110000…
…0011101000101000
312012211011011200220
41320130003220220
513114234331330
6532300530040
7101033664600
oct17034035050
95184134626
102020620840
11947651387
12484850920
13262817244
14152505c00
15bc5d7710
hex78703a28

2020620840 has 384 divisors, whose sum is σ = 7501455360. Its totient is φ = 433230336.

The previous prime is 2020620839. The next prime is 2020620853. The reversal of 2020620840 is 480260202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2020620840.

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 95 ways as a sum of consecutive naturals, for example, 9060969 + ... + 9061191.

It is an arithmetic number, because the mean of its divisors is an integer number (19535040).

Almost surely, 22020620840 is an apocalyptic number.

2020620840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020620840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3750727680).

2020620840 is an abundant number, since it is smaller than the sum of its proper divisors (5480834520).

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

2020620840 is a wasteful number, since it uses less digits than its factorization.

2020620840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2020620840 is about 44951.3163322277. The cubic root of 2020620840 is about 1264.2363578859.

The spelling of 2020620840 in words is "two billion, twenty million, six hundred twenty thousand, eight hundred forty".