20653030 has 16 divisors (see below), whose sum is σ = 38180880. Its totient is φ = 8037792.

The previous prime is 20653007. The next prime is 20653063. The reversal of 20653030 is 3035602.

It is a junction number, because it is equal to n+sod(n) for n = 20652989 and 20653007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27540 + ... + 28279.

It is an arithmetic number, because the mean of its divisors is an integer number (2386305).

Almost surely, 2^20653030 is an apocalyptic number.

20653030 is a deficient number, since it is larger than the sum of its proper divisors (17527850).

20653030 is a wasteful number, since it uses less digits than its factorization.

20653030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55863.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20653030 is about 4544.5604847994. The cubic root of 20653030 is about 274.3645050235.

Adding to 20653030 its reverse (3035602), we get a palindrome (23688632).

The spelling of 20653030 in words is "twenty million, six hundred fifty-three thousand, thirty".