320870394 has 36 divisors (see below), whose sum is σ = 749337498. Its totient is φ = 98645040.

The previous prime is 320870383. The next prime is 320870399. The reversal of 320870394 is 493078023.

It can be written as a sum of positive squares in only one way, i.e., 308529225 + 12341169 = 17565^2 + 3513^2 .

It is not an unprimeable number, because it can be changed into a prime (320870399) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 273429 + ... + 274599.

Almost surely, 2^320870394 is an apocalyptic number.

320870394 is an abundant number, since it is smaller than the sum of its proper divisors (428467104).

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

320870394 is a wasteful number, since it uses less digits than its factorization.

320870394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 320870394 is about 17912.8555512515. The cubic root of 320870394 is about 684.6099642578.

The spelling of 320870394 in words is "three hundred twenty million, eight hundred seventy thousand, three hundred ninety-four".