320121464 has 32 divisors (see below), whose sum is σ = 647468640. Its totient is φ = 147504000.

The previous prime is 320121457. The next prime is 320121467. The reversal of 320121464 is 464121023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320121467) 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, 70709 + ... + 75099.

It is an arithmetic number, because the mean of its divisors is an integer number (20233395).

Almost surely, 2^320121464 is an apocalyptic number.

It is an amenable number.

320121464 is an abundant number, since it is smaller than the sum of its proper divisors (327347176).

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

320121464 is a wasteful number, since it uses less digits than its factorization.

320121464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 320121464 is about 17891.9385199033. The cubic root of 320121464 is about 684.0769096059.

Adding to 320121464 its reverse (464121023), we get a palindrome (784242487).

The spelling of 320121464 in words is "three hundred twenty million, one hundred twenty-one thousand, four hundred sixty-four".