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385102381 = 4159159199
BaseRepresentation
bin10110111101000…
…011001000101101
3222211122020011011
4112331003020231
51242041234011
6102114025221
712354213316
oct2675031055
9884566134
10385102381
11188420134
12a8b78211
1361a26741
143920760d
1523c1e621
hex16f4322d

385102381 has 8 divisors (see below), whose sum is σ = 401184000. Its totient is φ = 369339360.

The previous prime is 385102337. The next prime is 385102391. The reversal of 385102381 is 183201583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385102381 - 211 = 385100333 is a prime.

It is a super-2 number, since 2×3851023812 = 296607687703738322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385102301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77181 + ... + 82018.

It is an arithmetic number, because the mean of its divisors is an integer number (50148000).

Almost surely, 2385102381 is an apocalyptic number.

It is an amenable number.

385102381 is a deficient number, since it is larger than the sum of its proper divisors (16081619).

385102381 is a wasteful number, since it uses less digits than its factorization.

385102381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159299.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 385102381 is about 19624.0256063836. The cubic root of 385102381 is about 727.5431140039.

The spelling of 385102381 in words is "three hundred eighty-five million, one hundred two thousand, three hundred eighty-one".

Divisors: 1 41 59 2419 159199 6527159 9392741 385102381