320780046 has 16 divisors (see below), whose sum is σ = 643846608. Its totient is φ = 106545600.

The previous prime is 320780041. The next prime is 320780069. The reversal of 320780046 is 640087023.

It is a junction number, because it is equal to n+sod(n) for n = 320779995 and 320780022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320780041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93445 + ... + 96816.

It is an arithmetic number, because the mean of its divisors is an integer number (40240413).

Almost surely, 2^320780046 is an apocalyptic number.

320780046 is an abundant number, since it is smaller than the sum of its proper divisors (323066562).

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

320780046 is a wasteful number, since it uses less digits than its factorization.

320780046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190547.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 320780046 is about 17910.3334977325. Note that the first 3 decimals coincide. The cubic root of 320780046 is about 684.5457026447.

The spelling of 320780046 in words is "three hundred twenty million, seven hundred eighty thousand, forty-six".