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10270280 = 235256757
BaseRepresentation
bin100111001011…
…011001001000
3201022210011202
4213023121020
510112122110
61004043332
7153203336
oct47133110
921283152
1010270280
115885239
123533548
1321878b7
141514b56
15d7d0a5
hex9cb648

10270280 has 16 divisors (see below), whose sum is σ = 23108220. Its totient is φ = 4108096.

The previous prime is 10270277. The next prime is 10270283. The reversal of 10270280 is 8207201.

It is an interprime number because it is at equal distance from previous prime (10270277) and next prime (10270283).

It can be written as a sum of positive squares in 2 ways, for example, as 10201636 + 68644 = 3194^2 + 262^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (10270283) 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 3 ways as a sum of consecutive naturals, for example, 128339 + ... + 128418.

Almost surely, 210270280 is an apocalyptic number.

10270280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10270280 is an abundant number, since it is smaller than the sum of its proper divisors (12837940).

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

10270280 is a wasteful number, since it uses less digits than its factorization.

10270280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256768 (or 256764 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 10270280 is about 3204.7277575482. The cubic root of 10270280 is about 217.3672418352.

Adding to 10270280 its reverse (8207201), we get a palindrome (18477481).

The spelling of 10270280 in words is "ten million, two hundred seventy thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 256757 513514 1027028 1283785 2054056 2567570 5135140 10270280