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1270 = 25127
BaseRepresentation
bin10011110110
31202001
4103312
520040
65514
73463
oct2366
91661
101270
11a55
1289a
13769
1466a
1559a
hex4f6

1270 has 8 divisors (see below), whose sum is σ = 2304. Its totient is φ = 504.

The previous prime is 1259. The next prime is 1277. The reversal of 1270 is 721.

Adding to 1270 its reverse (721), we get a palindrome (1991).

1270 = T20 + T21 + ... + T24.

1270 is nontrivially palindromic in base 9.

1270 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12702 = 3225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 127 = 1270 / (1 + 2 + 7 + 0).

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 8, base 12, base 14 and base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 73.

It is an arithmetic number, because the mean of its divisors is an integer number (288).

21270 is an apocalyptic number.

1270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1270 is a deficient number, since it is larger than the sum of its proper divisors (1034).

1270 is a wasteful number, since it uses less digits than its factorization.

1270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 1270 is about 35.6370593624. The cubic root of 1270 is about 10.8293213283.

The spelling of 1270 in words is "one thousand, two hundred seventy", and thus it is an iban number.

Divisors: 1 2 5 10 127 254 635 1270