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388885000427 = 711239119317713
BaseRepresentation
bin1011010100010110101…
…10100011000011101011
31101011210001201212222222
411222023112203003223
522332414030003202
6454352403104255
740044634651310
oct5521326430353
91334701655888
10388885000427
1113aa1a498740
126345097208b
132a89694ab11
1414b71d18d07
15a1b0be04a2
hex5a8b5a30eb

388885000427 has 32 divisors (see below), whose sum is σ = 487307888640. Its totient is φ = 301489413120.

The previous prime is 388885000349. The next prime is 388885000447. The reversal of 388885000427 is 724000588883.

It is not a de Polignac number, because 388885000427 - 210 = 388884999403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388885000447) 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, 21945923 + ... + 21963635.

It is an arithmetic number, because the mean of its divisors is an integer number (15228371520).

Almost surely, 2388885000427 is an apocalyptic number.

388885000427 is a deficient number, since it is larger than the sum of its proper divisors (98422888213).

388885000427 is a wasteful number, since it uses less digits than its factorization.

388885000427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 388885000427 in words is "three hundred eighty-eight billion, eight hundred eighty-five million, four hundred twenty-seven", and thus it is an aban number.

Divisors: 1 7 11 77 239 1193 1673 2629 8351 13123 17713 18403 91861 123991 194843 285127 1363901 1995889 3136397 4233407 21131609 21954779 29633849 46567477 147921263 232447699 325972339 1627133893 5050454551 35353181857 55555000061 388885000427