20549016 has 48 divisors (see below), whose sum is σ = 56019600. Its totient is φ = 6804672.

The previous prime is 20549003. The next prime is 20549027. The reversal of 20549016 is 61094502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11170 + ... + 12878.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^20549016 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 20549016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28009800).

20549016 is an abundant number, since it is smaller than the sum of its proper divisors (35470584).

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

20549016 is a wasteful number, since it uses less digits than its factorization.

20549016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20549016 is about 4533.1022490123. The cubic root of 20549016 is about 273.9031394362.

The spelling of 20549016 in words is "twenty million, five hundred forty-nine thousand, sixteen".