20653234 has 16 divisors (see below), whose sum is σ = 35497728. Its totient is φ = 8828352.

The previous prime is 20653229. The next prime is 20653267. The reversal of 20653234 is 43235602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20653199 and 20653208.

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, 4359 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (2218608).

Almost surely, 2^20653234 is an apocalyptic number.

20653234 is a deficient number, since it is larger than the sum of its proper divisors (14844494).

20653234 is a wasteful number, since it uses less digits than its factorization.

20653234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20653234 is about 4544.5829291586. The cubic root of 20653234 is about 274.3654083643.

Adding to 20653234 its reverse (43235602), we get a palindrome (63888836).

The spelling of 20653234 in words is "twenty million, six hundred fifty-three thousand, two hundred thirty-four".