1147264 has 16 divisors (see below), whose sum is σ = 2285820. Its totient is φ = 573568.

The previous prime is 1147253. The next prime is 1147271. The reversal of 1147264 is 4627411.

It is a tau number, because it is divible by the number of its divisors (16).

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, 4354 + ... + 4609.

2^1147264 is an apocalyptic number.

It is an amenable number.

1147264 is a deficient number, since it is larger than the sum of its proper divisors (1138556).

1147264 is an frugal number, since it uses more digits than its factorization.

1147264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8977 (or 8965 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 1147264 is about 1071.1041032505. The cubic root of 1147264 is about 104.6858030021.

The spelling of 1147264 in words is "one million, one hundred forty-seven thousand, two hundred sixty-four".