1248718720 has 32 divisors (see below), whose sum is σ = 2985219720. Its totient is φ = 499487232.

The previous prime is 1248718717. The next prime is 1248718721. The reversal of 1248718720 is 278178421.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248718721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974922 + ... + 976201.

Almost surely, 2^1248718720 is an apocalyptic number.

1248718720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248718720 is an abundant number, since it is smaller than the sum of its proper divisors (1736501000).

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

1248718720 is an equidigital number, since it uses as much as digits as its factorization.

1248718720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951142 (or 1951130 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 1248718720 is about 35337.2143780463. The cubic root of 1248718720 is about 1076.8491613109.

The spelling of 1248718720 in words is "one billion, two hundred forty-eight million, seven hundred eighteen thousand, seven hundred twenty".