20163910 has 32 divisors (see below), whose sum is σ = 39473280. Its totient is φ = 7371648.

The previous prime is 20163889. The next prime is 20163911. The reversal of 20163910 is 1936102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20163911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13459 + ... + 14881.

It is an arithmetic number, because the mean of its divisors is an integer number (1233540).

Almost surely, 2^20163910 is an apocalyptic number.

20163910 is a deficient number, since it is larger than the sum of its proper divisors (19309370).

20163910 is a wasteful number, since it uses less digits than its factorization.

20163910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 20163910 is about 4490.4242561255. The cubic root of 20163910 is about 272.1812787389.

The spelling of 20163910 in words is "twenty million, one hundred sixty-three thousand, nine hundred ten".