20740160 has 112 divisors (see below), whose sum is σ = 57936384. Its totient is φ = 6924288.

The previous prime is 20740127. The next prime is 20740163. The reversal of 20740160 is 6104702.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20740163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105182 + ... + 105378.

Almost surely, 2^20740160 is an apocalyptic number.

20740160 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 20740160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28968192).

20740160 is an abundant number, since it is smaller than the sum of its proper divisors (37196224).

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

20740160 is a wasteful number, since it uses less digits than its factorization.

20740160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20740160 is about 4554.1365811754. The cubic root of 20740160 is about 274.7497889413.

Adding to 20740160 its reverse (6104702), we get a palindrome (26844862).

The spelling of 20740160 in words is "twenty million, seven hundred forty thousand, one hundred sixty".