20707230 has 32 divisors (see below), whose sum is σ = 50544000. Its totient is φ = 5427872.

The previous prime is 20707229. The next prime is 20707231. The reversal of 20707230 is 3270702.

It is an interprime number because it is at equal distance from previous prime (20707229) and next prime (20707231).

It is a junction number, because it is equal to n+sod(n) for n = 20707197 and 20707206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20707231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4080 + ... + 7619.

It is an arithmetic number, because the mean of its divisors is an integer number (1579500).

Almost surely, 2^20707230 is an apocalyptic number.

20707230 is an abundant number, since it is smaller than the sum of its proper divisors (29836770).

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

20707230 is a wasteful number, since it uses less digits than its factorization.

20707230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 20707230 is about 4550.5197505340. The cubic root of 20707230 is about 274.6043014243.

Adding to 20707230 its reverse (3270702), we get a palindrome (23977932).

The spelling of 20707230 in words is "twenty million, seven hundred seven thousand, two hundred thirty".