20710430 has 16 divisors (see below), whose sum is σ = 40146624. Its totient is φ = 7646880.

The previous prime is 20710421. The next prime is 20710433. The reversal of 20710430 is 3401702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20710399 and 20710408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710433) 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, 79526 + ... + 79785.

It is an arithmetic number, because the mean of its divisors is an integer number (2509164).

Almost surely, 2^20710430 is an apocalyptic number.

20710430 is a deficient number, since it is larger than the sum of its proper divisors (19436194).

20710430 is a wasteful number, since it uses less digits than its factorization.

20710430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159331.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20710430 is about 4550.8713451382. The cubic root of 20710430 is about 274.6184460572.

The spelling of 20710430 in words is "twenty million, seven hundred ten thousand, four hundred thirty".