1264 has 10 divisors (see below), whose sum is σ = 2480. Its totient is φ = 624.

The previous prime is 1259. The next prime is 1277. The reversal of 1264 is 4621.

Adding to 1264 its reverse (4621), we get a palindrome (5885).

1264 is nontrivially palindromic in base 11.

1264 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

1264 is an undulating number in base 11.

It is a nialpdrome in base 13 and base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24 + ... + 55.

It is an arithmetic number, because the mean of its divisors is an integer number (248).

It is an amenable number.

1264 is a deficient number, since it is larger than the sum of its proper divisors (1216).

1264 is an equidigital number, since it uses as much as digits as its factorization.

1264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 81 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 1264 is about 35.5527776693. The cubic root of 1264 is about 10.8122403515.

The spelling of 1264 in words is "one thousand, two hundred sixty-four".

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •