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385249760 = 2557249139
BaseRepresentation
bin10110111101100…
…111000111100000
3222211220201022122
4112331213013200
51242110443020
6102121123412
712355366100
oct2675470740
9884821278
10385249760
11188510935
12a9029568
1361a7884c
1439245200
1523c4d125
hex16f671e0

385249760 has 72 divisors (see below), whose sum is σ = 1058770440. Its totient is φ = 132082944.

The previous prime is 385249751. The next prime is 385249769. The reversal of 385249760 is 67942583.

It is an interprime number because it is at equal distance from previous prime (385249751) and next prime (385249769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385249769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16730 + ... + 32409.

It is an arithmetic number, because the mean of its divisors is an integer number (14705145).

Almost surely, 2385249760 is an apocalyptic number.

It is an amenable number.

385249760 is an abundant number, since it is smaller than the sum of its proper divisors (673520680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385249760 is a wasteful number, since it uses less digits than its factorization.

385249760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49168 (or 49153 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 385249760 is about 19627.7803126079. The cubic root of 385249760 is about 727.6359126175.

It can be divided in two parts, 38524 and 9760, that added together give a palindrome (48284).

The spelling of 385249760 in words is "three hundred eighty-five million, two hundred forty-nine thousand, seven hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 70 80 98 112 140 160 196 224 245 280 392 490 560 784 980 1120 1568 1960 3920 7840 49139 98278 196556 245695 343973 393112 491390 687946 786224 982780 1375892 1572448 1719865 1965560 2407811 2751784 3439730 3931120 4815622 5503568 6879460 7862240 9631244 11007136 12039055 13758920 19262488 24078110 27517840 38524976 48156220 55035680 77049952 96312440 192624880 385249760