20673360 has 160 divisors (see below), whose sum is σ = 75530880. Its totient is φ = 5179392.

The previous prime is 20673347. The next prime is 20673361. The reversal of 20673360 is 6337602.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673361) 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 31 ways as a sum of consecutive naturals, for example, 36439 + ... + 37001.

It is an arithmetic number, because the mean of its divisors is an integer number (472068).

Almost surely, 2^20673360 is an apocalyptic number.

20673360 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 20673360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37765440).

20673360 is an abundant number, since it is smaller than the sum of its proper divisors (54857520).

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

20673360 is a wasteful number, since it uses less digits than its factorization.

20673360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 20673360 is about 4546.7966745831. The cubic root of 20673360 is about 274.4544999087.

It can be divided in two parts, 20 and 673360, that added together give a triangular number (673380 = T₁₁₆₀).

The spelling of 20673360 in words is "twenty million, six hundred seventy-three thousand, three hundred sixty".