320969538 has 12 divisors (see below), whose sum is σ = 695434038. Its totient is φ = 106989840.

The previous prime is 320969497. The next prime is 320969543. The reversal of 320969538 is 835969023.

320969538 is a `hidden beast` number, since 3 + 20 + 96 + 9 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 212663889 + 108305649 = 14583^2 + 10407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320969493 and 320969502.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8915803 + ... + 8915838.

Almost surely, 2^320969538 is an apocalyptic number.

320969538 is an abundant number, since it is smaller than the sum of its proper divisors (374464500).

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

320969538 is a wasteful number, since it uses less digits than its factorization.

320969538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17831649 (or 17831646 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 320969538 is about 17915.6227354787. The cubic root of 320969538 is about 684.6804683013.

The spelling of 320969538 in words is "three hundred twenty million, nine hundred sixty-nine thousand, five hundred thirty-eight".