20340030 has 32 divisors (see below), whose sum is σ = 50393088. Its totient is φ = 5248800.

The previous prime is 20340029. The next prime is 20340031. The reversal of 20340030 is 3004302.

It is an interprime number because it is at equal distance from previous prime (20340029) and next prime (20340031).

It is a junction number, because it is equal to n+sod(n) for n = 20339988 and 20340015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10006 + ... + 11865.

It is an arithmetic number, because the mean of its divisors is an integer number (1574784).

Almost surely, 2^20340030 is an apocalyptic number.

20340030 is an abundant number, since it is smaller than the sum of its proper divisors (30053058).

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

20340030 is a wasteful number, since it uses less digits than its factorization.

20340030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21912.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20340030 is about 4509.9922394612. The cubic root of 20340030 is about 272.9714309489.

Adding to 20340030 its reverse (3004302), we get a palindrome (23344332).

The spelling of 20340030 in words is "twenty million, three hundred forty thousand, thirty".