20153236 has 12 divisors (see below), whose sum is σ = 35598528. Its totient is φ = 9982232.

The previous prime is 20153227. The next prime is 20153251. The reversal of 20153236 is 63235102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23116 + ... + 23971.

It is an arithmetic number, because the mean of its divisors is an integer number (2966544).

Almost surely, 2^20153236 is an apocalyptic number.

It is an amenable number.

20153236 is a deficient number, since it is larger than the sum of its proper divisors (15445292).

20153236 is a wasteful number, since it uses less digits than its factorization.

20153236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47198 (or 47196 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20153236 is about 4489.2355696711. The cubic root of 20153236 is about 272.1332428212.

Adding to 20153236 its reverse (63235102), we get a palindrome (83388338).

The spelling of 20153236 in words is "twenty million, one hundred fifty-three thousand, two hundred thirty-six".