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13440070380 = 22351120363743
BaseRepresentation
bin11001000010001011…
…10011001011101100
31021200122212022112110
430201011303023230
5210011124223010
610101351204020
7654025466442
oct144105631354
937618768473
1013440070380
115777629890
122731076610
131362602b89
14916da0b92
15539dcd120
hex3211732ec

13440070380 has 48 divisors (see below), whose sum is σ = 41053307904. Its totient is φ = 3258198720.

The previous prime is 13440070379. The next prime is 13440070381. The reversal of 13440070380 is 8307004431.

It is an interprime number because it is at equal distance from previous prime (13440070379) and next prime (13440070381).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13440070381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10181212 + ... + 10182531.

It is an arithmetic number, because the mean of its divisors is an integer number (855277248).

Almost surely, 213440070380 is an apocalyptic number.

13440070380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13440070380 is an abundant number, since it is smaller than the sum of its proper divisors (27613237524).

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

13440070380 is a wasteful number, since it uses less digits than its factorization.

13440070380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20363766 (or 20363764 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 13440070380 in words is "thirteen billion, four hundred forty million, seventy thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 20363743 40727486 61091229 81454972 101818715 122182458 203637430 224001173 244364916 305456145 407274860 448002346 610912290 672003519 896004692 1120005865 1221824580 1344007038 2240011730 2688014076 3360017595 4480023460 6720035190 13440070380