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385105975 = 5215404239
BaseRepresentation
bin10110111101000…
…100000000110111
3222211122102002021
4112331010000313
51242041342400
6102114054011
712354226642
oct2675040067
9884572067
10385105975
11188422901
12a8b7a307
1361a28277
1439208a59
1523c2071a
hex16f44037

385105975 has 6 divisors (see below), whose sum is σ = 477531440. Its totient is φ = 308084760.

The previous prime is 385105969. The next prime is 385105999. The reversal of 385105975 is 579501583.

It is not a de Polignac number, because 385105975 - 25 = 385105943 is a prime.

It is a super-2 number, since 2×3851059752 = 296613223961401250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7702095 + ... + 7702144.

Almost surely, 2385105975 is an apocalyptic number.

385105975 is a deficient number, since it is larger than the sum of its proper divisors (92425465).

385105975 is a wasteful number, since it uses less digits than its factorization.

385105975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404249 (or 15404244 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 43.

The square root of 385105975 is about 19624.1171775955. The cubic root of 385105975 is about 727.5453772824.

The spelling of 385105975 in words is "three hundred eighty-five million, one hundred five thousand, nine hundred seventy-five".

Divisors: 1 5 25 15404239 77021195 385105975