320412445 has 8 divisors (see below), whose sum is σ = 397753560. Its totient is φ = 247490880.

The previous prime is 320412427. The next prime is 320412457. The reversal of 320412445 is 544214023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95472441 + 224940004 = 9771^2 + 14998^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320412445 - 2⁹ = 320411933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104726 + ... + 1105015.

It is an arithmetic number, because the mean of its divisors is an integer number (49719195).

Almost surely, 2^320412445 is an apocalyptic number.

It is an amenable number.

320412445 is a deficient number, since it is larger than the sum of its proper divisors (77341115).

320412445 is a wasteful number, since it uses less digits than its factorization.

320412445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209775.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 320412445 is about 17900.0682959591. The cubic root of 320412445 is about 684.2841154375.

Adding to 320412445 its reverse (544214023), we get a palindrome (864626468).

The spelling of 320412445 in words is "three hundred twenty million, four hundred twelve thousand, four hundred forty-five".