20340630 has 24 divisors (see below), whose sum is σ = 52885872. Its totient is φ = 5424144.

The previous prime is 20340623. The next prime is 20340631. The reversal of 20340630 is 3604302.

20340630 is a `hidden beast` number, since 2 + 0 + 34 + 0 + 630 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112914 + ... + 113093.

It is an arithmetic number, because the mean of its divisors is an integer number (2203578).

Almost surely, 2^20340630 is an apocalyptic number.

20340630 is an abundant number, since it is smaller than the sum of its proper divisors (32545242).

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

20340630 is a wasteful number, since it uses less digits than its factorization.

20340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226020 (or 226017 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20340630 is about 4510.0587579321. The cubic root of 20340630 is about 272.9741150034.

Adding to 20340630 its reverse (3604302), we get a palindrome (23944932).

The spelling of 20340630 in words is "twenty million, three hundred forty thousand, six hundred thirty".