720753402 has 16 divisors (see below), whose sum is σ = 1450690272. Its totient is φ = 238720560.

The previous prime is 720753389. The next prime is 720753409. The reversal of 720753402 is 204357027.

It is a self number, because there is not a number n which added to its sum of digits gives 720753402.

It is not an unprimeable number, because it can be changed into a prime (720753409) 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 7 ways as a sum of consecutive naturals, for example, 381624 + ... + 383507.

It is an arithmetic number, because the mean of its divisors is an integer number (90668142).

Almost surely, 2^720753402 is an apocalyptic number.

720753402 is an abundant number, since it is smaller than the sum of its proper divisors (729936870).

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

720753402 is a wasteful number, since it uses less digits than its factorization.

720753402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765293.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 720753402 is about 26846.8508767788. The cubic root of 720753402 is about 896.5934606391.

The spelling of 720753402 in words is "seven hundred twenty million, seven hundred fifty-three thousand, four hundred two".