20000030 has 8 divisors (see below), whose sum is σ = 36000072. Its totient is φ = 8000008.

The previous prime is 20000023. The next prime is 20000033. The reversal of 20000030 is 3000002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (5).

20000030 is a modest number, since divided by 30 gives 20 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19999969 and 20000023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999992 + ... + 1000011.

It is an arithmetic number, because the mean of its divisors is an integer number (4500009).

Almost surely, 2^20000030 is an apocalyptic number.

20000030 is a deficient number, since it is larger than the sum of its proper divisors (16000042).

20000030 is a wasteful number, since it uses less digits than its factorization.

20000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000010.

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 20000030 is about 4472.1393091003. The cubic root of 20000030 is about 271.4418973803.

Adding to 20000030 its reverse (3000002), we get a palindrome (23000032).

The spelling of 20000030 in words is "twenty million, thirty", and thus it is an aban number and an uban number.