1264288 has 12 divisors (see below), whose sum is σ = 2489130. Its totient is φ = 632128.

The previous prime is 1264271. The next prime is 1264301. The reversal of 1264288 is 8824621.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 71824 = 1092^2 + 268^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19723 + ... + 19786.

2^1264288 is an apocalyptic number.

It is an amenable number.

1264288 is a deficient number, since it is larger than the sum of its proper divisors (1224842).

1264288 is an equidigital number, since it uses as much as digits as its factorization.

1264288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39519 (or 39511 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1264288 is about 1124.4056207615. The cubic root of 1264288 is about 108.1306147195.

The spelling of 1264288 in words is "one million, two hundred sixty-four thousand, two hundred eighty-eight".