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388079427 = 31989227337
BaseRepresentation
bin10111001000011…
…001111101000011
31000001020110220010
4113020121331003
51243322020202
6102301520003
712421422621
oct2710317503
91001213803
10388079427
1118a0738aa
12a9b73003
13625297c8
1439780511
152410b76c
hex17219f43

388079427 has 32 divisors (see below), whose sum is σ = 554860800. Its totient is φ = 240565248.

The previous prime is 388079413. The next prime is 388079431. The reversal of 388079427 is 724970883.

It is not a de Polignac number, because 388079427 - 219 = 387555139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388079407) 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, 1151403 + ... + 1151739.

It is an arithmetic number, because the mean of its divisors is an integer number (17339400).

Almost surely, 2388079427 is an apocalyptic number.

388079427 is a deficient number, since it is larger than the sum of its proper divisors (166781373).

388079427 is a wasteful number, since it uses less digits than its factorization.

388079427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 388079427 is about 19699.7316479185. The cubic root of 388079427 is about 729.4130686010.

The spelling of 388079427 in words is "three hundred eighty-eight million, seventy-nine thousand, four hundred twenty-seven".

Divisors: 1 3 19 57 89 227 267 337 681 1011 1691 4313 5073 6403 12939 19209 20203 29993 60609 76499 89979 229497 383857 569867 1151571 1453481 1709601 4360443 6808411 20425233 129359809 388079427