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10287274 = 25143637
BaseRepresentation
bin100111001111…
…100010101010
3201100122111011
4213033202222
510113143044
61004254134
7153304024
oct47174252
921318434
1010287274
115896a88
12354134a
13219255a
14151b014
15d83134
hex9cf8aa

10287274 has 4 divisors (see below), whose sum is σ = 15430914. Its totient is φ = 5143636.

The previous prime is 10287271. The next prime is 10287281. The reversal of 10287274 is 47278201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6890625 + 3396649 = 2625^2 + 1843^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10287271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571817 + ... + 2571820.

Almost surely, 210287274 is an apocalyptic number.

10287274 is a deficient number, since it is larger than the sum of its proper divisors (5143640).

10287274 is an equidigital number, since it uses as much as digits as its factorization.

10287274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143639.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 10287274 is about 3207.3780569181. The cubic root of 10287274 is about 217.4870666551.

The spelling of 10287274 in words is "ten million, two hundred eighty-seven thousand, two hundred seventy-four".

Divisors: 1 2 5143637 10287274