20071030 has 32 divisors (see below), whose sum is σ = 43464960. Its totient is φ = 6518880.

The previous prime is 20071027. The next prime is 20071039. The reversal of 20071030 is 3017002.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 20071030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20071039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6216 + ... + 8875.

It is an arithmetic number, because the mean of its divisors is an integer number (1358280).

Almost surely, 2^20071030 is an apocalyptic number.

20071030 is an abundant number, since it is smaller than the sum of its proper divisors (23393930).

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

20071030 is a wasteful number, since it uses less digits than its factorization.

20071030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15124.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 20071030 is about 4480.0703119482. The cubic root of 20071030 is about 271.7627237987.

Adding to 20071030 its reverse (3017002), we get a palindrome (23088032).

The spelling of 20071030 in words is "twenty million, seventy-one thousand, thirty".