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38213144780 = 2255932384021
BaseRepresentation
bin100011100101101011…
…100101000011001100
310122122010202212221112
4203211223211003030
51111230031113110
625315504151152
72521646241236
oct434553450314
9118563685845
1038213144780
111522a362298
1274a56084b8
1337acb15595
141bc7157256
15ed9bc8405
hex8e5ae50cc

38213144780 has 24 divisors (see below), whose sum is σ = 81607735440. Its totient is φ = 15026185280.

The previous prime is 38213144689. The next prime is 38213144803. The reversal of 38213144780 is 8744131283.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16190831 + ... + 16193190.

It is an arithmetic number, because the mean of its divisors is an integer number (3400322310).

Almost surely, 238213144780 is an apocalyptic number.

It is an amenable number.

38213144780 is an abundant number, since it is smaller than the sum of its proper divisors (43394590660).

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

38213144780 is a wasteful number, since it uses less digits than its factorization.

38213144780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32384089 (or 32384087 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 38213144780 in words is "thirty-eight billion, two hundred thirteen million, one hundred forty-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 59 118 236 295 590 1180 32384021 64768042 129536084 161920105 323840210 647680420 1910657239 3821314478 7642628956 9553286195 19106572390 38213144780