320045100 has 36 divisors (see below), whose sum is σ = 925998024. Its totient is φ = 85345280.

The previous prime is 320045083. The next prime is 320045113. The reversal of 320045100 is 1540023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 320045100.

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, 533109 + ... + 533708.

Almost surely, 2^320045100 is an apocalyptic number.

320045100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320045100 is an abundant number, since it is smaller than the sum of its proper divisors (605952924).

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

320045100 is a wasteful number, since it uses less digits than its factorization.

320045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066834 (or 1066827 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 320045100 is about 17889.8043589079. The cubic root of 320045100 is about 684.0225104592.

Adding to 320045100 its reverse (1540023), we get a palindrome (321585123).

The spelling of 320045100 in words is "three hundred twenty million, forty-five thousand, one hundred".