320630464 has 56 divisors (see below), whose sum is σ = 793260288. Its totient is φ = 124919040.

The previous prime is 320630461. The next prime is 320630477. The reversal of 320630464 is 464036023.

320630464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (320630461) by changing a digit.

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, 27604 + ... + 37459.

Almost surely, 2^320630464 is an apocalyptic number.

It is an amenable number.

320630464 is an abundant number, since it is smaller than the sum of its proper divisors (472629824).

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

320630464 is a wasteful number, since it uses less digits than its factorization.

320630464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65093 (or 65083 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 320630464 is about 17906.1571533369. The cubic root of 320630464 is about 684.4392832704.

Adding to 320630464 its reverse (464036023), we get a palindrome (784666487).

It can be divided in two parts, 3206 and 30464, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 320630464 in words is "three hundred twenty million, six hundred thirty thousand, four hundred sixty-four".