20210245 has 16 divisors (see below), whose sum is σ = 27371520. Its totient is φ = 14190400.

The previous prime is 20210237. The next prime is 20210257. The reversal of 20210245 is 54201202.

It is not a de Polignac number, because 20210245 - 2³ = 20210237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4741 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^20210245 is an apocalyptic number.

It is an amenable number.

20210245 is a deficient number, since it is larger than the sum of its proper divisors (7161275).

20210245 is a wasteful number, since it uses less digits than its factorization.

20210245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12716.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20210245 is about 4495.5806076635. The cubic root of 20210245 is about 272.3896026171.

Adding to 20210245 its reverse (54201202), we get a palindrome (74411447).

The spelling of 20210245 in words is "twenty million, two hundred ten thousand, two hundred forty-five".