1247888 has 20 divisors (see below), whose sum is σ = 2523648. Its totient is φ = 596640.

The previous prime is 1247881. The next prime is 1247893. The reversal of 1247888 is 8887421.

It is a happy number.

It is a plaindrome in base 10 and base 14.

It is not an unprimeable number, because it can be changed into a prime (1247881) 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, 1328 + ... + 2063.

2^1247888 is an apocalyptic number.

It is an amenable number.

1247888 is an abundant number, since it is smaller than the sum of its proper divisors (1275760).

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

1247888 is a wasteful number, since it uses less digits than its factorization.

1247888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422 (or 3416 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 1247888 is about 1117.0890743356. The cubic root of 1247888 is about 107.6610314199.

The spelling of 1247888 in words is "one million, two hundred forty-seven thousand, eight hundred eighty-eight".