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385372143 = 321317918401
BaseRepresentation
bin10110111110000…
…100111111101111
3222212010221012100
4112332010333233
51242123402033
6102123510143
712356415642
oct2676047757
9885127170
10385372143
11188594882
12a9088353
1361abc470
1439277a59
1523c74513
hex16f84fef

385372143 has 24 divisors (see below), whose sum is σ = 602849520. Its totient is φ = 235814400.

The previous prime is 385372139. The next prime is 385372151. The reversal of 385372143 is 341273583.

It is not a de Polignac number, because 385372143 - 22 = 385372139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385372098 and 385372107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385372123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11743 + ... + 30143.

It is an arithmetic number, because the mean of its divisors is an integer number (25118730).

Almost surely, 2385372143 is an apocalyptic number.

385372143 is a deficient number, since it is larger than the sum of its proper divisors (217477377).

385372143 is a wasteful number, since it uses less digits than its factorization.

385372143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18599 (or 18596 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 385372143 is about 19630.8976615946. The cubic root of 385372143 is about 727.7129542731.

The spelling of 385372143 in words is "three hundred eighty-five million, three hundred seventy-two thousand, one hundred forty-three".

Divisors: 1 3 9 13 39 117 179 537 1611 2327 6981 18401 20943 55203 165609 239213 717639 2152917 3293779 9881337 29644011 42819127 128457381 385372143