320801004 has 36 divisors (see below), whose sum is σ = 822341520. Its totient is φ = 105426720.

The previous prime is 320800969. The next prime is 320801029. The reversal of 320801004 is 400108023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60199 + ... + 65310.

It is an arithmetic number, because the mean of its divisors is an integer number (22842820).

Almost surely, 2^320801004 is an apocalyptic number.

It is an amenable number.

320801004 is an abundant number, since it is smaller than the sum of its proper divisors (501540516).

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

320801004 is a wasteful number, since it uses less digits than its factorization.

320801004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125590 (or 125585 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 320801004 is about 17910.9185694090. The cubic root of 320801004 is about 684.5606104676.

Adding to 320801004 its reverse (400108023), we get a palindrome (720909027).

The spelling of 320801004 in words is "three hundred twenty million, eight hundred one thousand, four".