1248287644 has 12 divisors (see below), whose sum is σ = 2185225168. Its totient is φ = 623937600.

The previous prime is 1248287587. The next prime is 1248287723. The reversal of 1248287644 is 4467828421.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1248287594 and 1248287603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37512 + ... + 62479.

Almost surely, 2^1248287644 is an apocalyptic number.

It is an amenable number.

1248287644 is a deficient number, since it is larger than the sum of its proper divisors (936937524).

1248287644 is a wasteful number, since it uses less digits than its factorization.

1248287644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103116 (or 103114 counting only the distinct ones).

The product of its digits is 688128, while the sum is 46.

The square root of 1248287644 is about 35331.1143894443. The cubic root of 1248287644 is about 1076.7252323459.

The spelling of 1248287644 in words is "one billion, two hundred forty-eight million, two hundred eighty-seven thousand, six hundred forty-four".