720405248 has 18 divisors (see below), whose sum is σ = 1437996924. Its totient is φ = 360202496.

The previous prime is 720405227. The next prime is 720405251. The reversal of 720405248 is 842504027.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406786 + ... + 1407297.

It is an arithmetic number, because the mean of its divisors is an integer number (79888718).

Almost surely, 2^720405248 is an apocalyptic number.

It is an amenable number.

720405248 is a deficient number, since it is larger than the sum of its proper divisors (717591676).

720405248 is an equidigital number, since it uses as much as digits as its factorization.

720405248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814099 (or 2814085 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 720405248 is about 26840.3660183687. The cubic root of 720405248 is about 896.4490733571.

The spelling of 720405248 in words is "seven hundred twenty million, four hundred five thousand, two hundred forty-eight".