720428007 has 16 divisors (see below), whose sum is σ = 1035242208. Its totient is φ = 443005440.

The previous prime is 720427987. The next prime is 720428047. The reversal of 720428007 is 700824027.

It is not a de Polignac number, because 720428007 - 2¹⁸ = 720165863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720428047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51523 + ... + 63995.

It is an arithmetic number, because the mean of its divisors is an integer number (64702638).

Almost surely, 2^720428007 is an apocalyptic number.

720428007 is a deficient number, since it is larger than the sum of its proper divisors (314814201).

720428007 is a wasteful number, since it uses less digits than its factorization.

720428007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13970.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 720428007 is about 26840.7899846484. The cubic root of 720428007 is about 896.4585134464.

The spelling of 720428007 in words is "seven hundred twenty million, four hundred twenty-eight thousand, seven".