20169016 has 64 divisors (see below), whose sum is σ = 45158400. Its totient is φ = 8266752.

The previous prime is 20168989. The next prime is 20169029. The reversal of 20169016 is 61096102.

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 15 ways as a sum of consecutive naturals, for example, 207880 + ... + 207976.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^20169016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20169016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22579200).

20169016 is an abundant number, since it is smaller than the sum of its proper divisors (24989384).

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

20169016 is a wasteful number, since it uses less digits than its factorization.

20169016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 20169016 is about 4490.9927632986. The cubic root of 20169016 is about 272.2042511406.

The spelling of 20169016 in words is "twenty million, one hundred sixty-nine thousand, sixteen".