20771030 has 16 divisors (see below), whose sum is σ = 42729120. Its totient is φ = 7121472.

The previous prime is 20771029. The next prime is 20771041. The reversal of 20771030 is 3017702.

It is a junction number, because it is equal to n+sod(n) for n = 20770993 and 20771011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148295 + ... + 148434.

It is an arithmetic number, because the mean of its divisors is an integer number (2670570).

Almost surely, 2^20771030 is an apocalyptic number.

20771030 is an abundant number, since it is smaller than the sum of its proper divisors (21958090).

20771030 is a wasteful number, since it uses less digits than its factorization.

20771030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296743.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 20771030 is about 4557.5245473832. The cubic root of 20771030 is about 274.8860354223.

Adding to 20771030 its reverse (3017702), we get a palindrome (23788732).

The spelling of 20771030 in words is "twenty million, seven hundred seventy-one thousand, thirty".