20549260 has 48 divisors (see below), whose sum is σ = 48111840. Its totient is φ = 7326720.

The previous prime is 20549251. The next prime is 20549297. The reversal of 20549260 is 6294502.

20549260 is nontrivially palindromic in base 13.

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, 4870 + ... + 8050.

It is an arithmetic number, because the mean of its divisors is an integer number (1002330).

Almost surely, 2^20549260 is an apocalyptic number.

20549260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20549260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24055920).

20549260 is an abundant number, since it is smaller than the sum of its proper divisors (27562580).

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

20549260 is a wasteful number, since it uses less digits than its factorization.

20549260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20549260 is about 4533.1291620690. The cubic root of 20549260 is about 273.9042235449.

The spelling of 20549260 in words is "twenty million, five hundred forty-nine thousand, two hundred sixty".