720001430 has 32 divisors (see below), whose sum is σ = 1372564224. Its totient is φ = 271361376.

The previous prime is 720001423. The next prime is 720001433. The reversal of 720001430 is 34100027.

It is a happy number.

720001430 is a modest number, since divided by 1430 gives 720 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 720001399 and 720001408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720001433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7952 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (42892632).

Almost surely, 2^720001430 is an apocalyptic number.

720001430 is a deficient number, since it is larger than the sum of its proper divisors (652562794).

720001430 is a wasteful number, since it uses less digits than its factorization.

720001430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46820.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 720001430 is about 26832.8423764610. The cubic root of 720001430 is about 896.2815426822.

Adding to 720001430 its reverse (34100027), we get a palindrome (754101457).

The spelling of 720001430 in words is "seven hundred twenty million, one thousand, four hundred thirty".