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38788281213 = 3114725799697
BaseRepresentation
bin100100000111111101…
…100011001101111101
310201010012222211210220
4210013331203031331
51113414244444323
625452531251553
72542131643653
oct440775431575
9121105884726
1038788281213
11154a4a78860
127626149bb9
1338720170b6
141c3d6aadd3
1510204340e3
hex907f6337d

38788281213 has 32 divisors (see below), whose sum is σ = 57648015360. Its totient is φ = 22996584960.

The previous prime is 38788281209. The next prime is 38788281221. The reversal of 38788281213 is 31218288783.

38788281213 is an astonishing number since 38788281213 = 38788 + ... + 281213.

It is not a de Polignac number, because 38788281213 - 22 = 38788281209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38788281223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3995181 + ... + 4004877.

It is an arithmetic number, because the mean of its divisors is an integer number (1801500480).

Almost surely, 238788281213 is an apocalyptic number.

38788281213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

38788281213 is a deficient number, since it is larger than the sum of its proper divisors (18859734147).

38788281213 is a wasteful number, since it uses less digits than its factorization.

38788281213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12337.

The product of its digits is 1032192, while the sum is 51.

The spelling of 38788281213 in words is "thirty-eight billion, seven hundred eighty-eight million, two hundred eighty-one thousand, two hundred thirteen".