20103272 has 16 divisors (see below), whose sum is σ = 43078560. Its totient is φ = 8615664.

The previous prime is 20103269. The next prime is 20103277. The reversal of 20103272 is 27230102.

It is a self number, because there is not a number n which added to its sum of digits gives 20103272.

It is not an unprimeable number, because it can be changed into a prime (20103277) 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, 179438 + ... + 179549.

It is an arithmetic number, because the mean of its divisors is an integer number (2692410).

Almost surely, 2^20103272 is an apocalyptic number.

It is an amenable number.

20103272 is an abundant number, since it is smaller than the sum of its proper divisors (22975288).

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

20103272 is a wasteful number, since it uses less digits than its factorization.

20103272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359000 (or 358996 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20103272 is about 4483.6672490273. The cubic root of 20103272 is about 271.9081653644.

Adding to 20103272 its reverse (27230102), we get a palindrome (47333374).

The spelling of 20103272 in words is "twenty million, one hundred three thousand, two hundred seventy-two".