20814030 has 64 divisors (see below), whose sum is σ = 56033280. Its totient is φ = 5497632.

The previous prime is 20814029. The next prime is 20814037. The reversal of 20814030 is 3041802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20813994 and 20814012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20814037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33987 + ... + 34593.

It is an arithmetic number, because the mean of its divisors is an integer number (875520).

Almost surely, 2^20814030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20814030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28016640).

20814030 is an abundant number, since it is smaller than the sum of its proper divisors (35219250).

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

20814030 is a wasteful number, since it uses less digits than its factorization.

20814030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20814030 is about 4562.2395816090. The cubic root of 20814030 is about 275.0755935436.

Adding to 20814030 its reverse (3041802), we get a palindrome (23855832).

The spelling of 20814030 in words is "twenty million, eight hundred fourteen thousand, thirty".