720248978 has 16 divisors (see below), whose sum is σ = 1126275840. Its totient is φ = 345054000.

The previous prime is 720248957. The next prime is 720248987. The reversal of 720248978 is 879842027.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51248 + ... + 63771.

It is an arithmetic number, because the mean of its divisors is an integer number (70392240).

Almost surely, 2^720248978 is an apocalyptic number.

720248978 is a deficient number, since it is larger than the sum of its proper divisors (406026862).

720248978 is a wasteful number, since it uses less digits than its factorization.

720248978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115153.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 720248978 is about 26837.4547600923. The cubic root of 720248978 is about 896.3842495525.

The spelling of 720248978 in words is "seven hundred twenty million, two hundred forty-eight thousand, nine hundred seventy-eight".