20165106 has 16 divisors (see below), whose sum is σ = 43432704. Its totient is φ = 6204624.

The previous prime is 20165081. The next prime is 20165129. The reversal of 20165106 is 60156102.

It is a happy number.

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, 129186 + ... + 129341.

It is an arithmetic number, because the mean of its divisors is an integer number (2714544).

Almost surely, 2^20165106 is an apocalyptic number.

20165106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20165106 is an abundant number, since it is smaller than the sum of its proper divisors (23267598).

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

20165106 is a wasteful number, since it uses less digits than its factorization.

20165106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258545.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20165106 is about 4490.5574264227. The cubic root of 20165106 is about 272.1866600096.

The spelling of 20165106 in words is "twenty million, one hundred sixty-five thousand, one hundred six".