20160340 has 12 divisors (see below), whose sum is σ = 42336756. Its totient is φ = 8064128.

The previous prime is 20160319. The next prime is 20160341. The reversal of 20160340 is 4306102.

It can be written as a sum of positive squares in 2 ways, for example, as 16112196 + 4048144 = 4014^2 + 2012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20160341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503989 + ... + 504028.

It is an arithmetic number, because the mean of its divisors is an integer number (3528063).

Almost surely, 2^20160340 is an apocalyptic number.

20160340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20160340 is an abundant number, since it is smaller than the sum of its proper divisors (22176416).

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

20160340 is a wasteful number, since it uses less digits than its factorization.

20160340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008026 (or 1008024 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20160340 is about 4490.0267259784. The cubic root of 20160340 is about 272.1652146502.

Adding to 20160340 its reverse (4306102), we get a palindrome (24466442).

The spelling of 20160340 in words is "twenty million, one hundred sixty thousand, three hundred forty".