20727030 has 64 divisors (see below), whose sum is σ = 52005888. Its totient is φ = 5281920.

The previous prime is 20727023. The next prime is 20727037. The reversal of 20727030 is 3072702.

It is an interprime number because it is at equal distance from previous prime (20727023) and next prime (20727037).

It is a junction number, because it is equal to n+sod(n) for n = 20726988 and 20727006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78679 + ... + 78941.

It is an arithmetic number, because the mean of its divisors is an integer number (812592).

Almost surely, 2^20727030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20727030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26002944).

20727030 is an abundant number, since it is smaller than the sum of its proper divisors (31278858).

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

20727030 is a wasteful number, since it uses less digits than its factorization.

20727030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

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

The square root of 20727030 is about 4552.6948063757. The cubic root of 20727030 is about 274.6917979670.

Adding to 20727030 its reverse (3072702), we get a palindrome (23799732).

The spelling of 20727030 in words is "twenty million, seven hundred twenty-seven thousand, thirty".