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10253385 = 3652997
BaseRepresentation
bin100111000111…
…010001001001
3201021221000000
4213013101021
510111102020
61003433213
7153103152
oct47072111
921257000
1010253385
11587357a
123525809
13217ccbc
14150c929
15d78090
hex9c7449

10253385 has 56 divisors (see below), whose sum is σ = 19280520. Its totient is φ = 5225472.

The previous prime is 10253371. The next prime is 10253389. The reversal of 10253385 is 58335201.

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 9308601 = 972^2 + 3051^2 .

It is not a de Polignac number, because 10253385 - 211 = 10251337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10253389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 105657 + ... + 105753.

It is an arithmetic number, because the mean of its divisors is an integer number (344295).

Almost surely, 210253385 is an apocalyptic number.

10253385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10253385 is a deficient number, since it is larger than the sum of its proper divisors (9027135).

10253385 is an frugal number, since it uses more digits than its factorization.

10253385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 10253385 is about 3202.0907232619. The cubic root of 10253385 is about 217.2479839653.

Adding to 10253385 its reverse (58335201), we get a palindrome (68588586).

The spelling of 10253385 in words is "ten million, two hundred fifty-three thousand, three hundred eighty-five".

Divisors: 1 3 5 9 15 27 29 45 81 87 97 135 145 243 261 291 405 435 485 729 783 873 1215 1305 1455 2349 2619 2813 3645 3915 4365 7047 7857 8439 11745 13095 14065 21141 23571 25317 35235 39285 42195 70713 75951 105705 117855 126585 227853 353565 379755 683559 1139265 2050677 3417795 10253385