1312488 has 24 divisors (see below), whose sum is σ = 3554850. Its totient is φ = 437472.

The previous prime is 1312471. The next prime is 1312513. The reversal of 1312488 is 8842131.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 636804 = 822^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9043 + ... + 9186.

2^1312488 is an apocalyptic number.

1312488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1312488 is an abundant number, since it is smaller than the sum of its proper divisors (2242362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312488 is a wasteful number, since it uses less digits than its factorization.

1312488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18241 (or 18234 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1312488 is about 1145.6386864976. The cubic root of 1312488 is about 109.4876448185.

The spelling of 1312488 in words is "one million, three hundred twelve thousand, four hundred eighty-eight".