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385115237 = 13191559171
BaseRepresentation
bin10110111101000…
…110010001100101
3222211122212210022
4112331012101211
51242042141422
6102114204525
712354265643
oct2675062145
9884585708
10385115237
11188429861
12a8b83745
1361a2c550
143920c193
1523c23342
hex16f46465

385115237 has 8 divisors (see below), whose sum is σ = 436568160. Its totient is φ = 336780720.

The previous prime is 385115233. The next prime is 385115257. The reversal of 385115237 is 732511583.

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 385115237 - 22 = 385115233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385115197 and 385115206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385115231) 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, 779339 + ... + 779832.

It is an arithmetic number, because the mean of its divisors is an integer number (54571020).

Almost surely, 2385115237 is an apocalyptic number.

It is an amenable number.

385115237 is a deficient number, since it is larger than the sum of its proper divisors (51452923).

385115237 is a wasteful number, since it uses less digits than its factorization.

385115237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559203.

The product of its digits is 25200, while the sum is 35.

The square root of 385115237 is about 19624.3531613146. The cubic root of 385115237 is about 727.5512098512.

The spelling of 385115237 in words is "three hundred eighty-five million, one hundred fifteen thousand, two hundred thirty-seven".

Divisors: 1 13 19 247 1559171 20269223 29624249 385115237