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20014301440 = 28572233739
BaseRepresentation
bin10010101000111100…
…100000000100000000
31220122211102212010201
4102220330200010000
5311442130121230
613105555534544
71305654520030
oct225074400400
956584385121
1020014301440
1185406079a1
123a668ba454
131b6c644323
14d7c1698c0
157c21435ca
hex4a8f20100

20014301440 has 72 divisors (see below), whose sum is σ = 54789174720. Its totient is φ = 6862043136.

The previous prime is 20014301407. The next prime is 20014301441. The reversal of 20014301440 is 4410341002.

It is not an unprimeable number, because it can be changed into a prime (20014301441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107910 + ... + 1125829.

It is an arithmetic number, because the mean of its divisors is an integer number (760960760).

Almost surely, 220014301440 is an apocalyptic number.

20014301440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20014301440 is an abundant number, since it is smaller than the sum of its proper divisors (34774873280).

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

20014301440 is an equidigital number, since it uses as much as digits as its factorization.

20014301440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233767 (or 2233753 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20014301440 its reverse (4410341002), we get a palindrome (24424642442).

The spelling of 20014301440 in words is "twenty billion, fourteen million, three hundred one thousand, four hundred forty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 560 640 896 1120 1280 1792 2240 4480 8960 2233739 4467478 8934956 11168695 15636173 17869912 22337390 31272346 35739824 44674780 62544692 71479648 78180865 89349560 125089384 142959296 156361730 178699120 250178768 285918592 312723460 357398240 500357536 571837184 625446920 714796480 1000715072 1250893840 1429592960 2001430144 2501787680 2859185920 4002860288 5003575360 10007150720 20014301440