20141280 has 144 divisors (see below), whose sum is σ = 70053984. Its totient is φ = 5268480.

The previous prime is 20141269. The next prime is 20141309. The reversal of 20141280 is 8214102.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 102142 + ... + 102338.

It is an arithmetic number, because the mean of its divisors is an integer number (486486).

Almost surely, 2^20141280 is an apocalyptic number.

20141280 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 20141280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35026992).

20141280 is an abundant number, since it is smaller than the sum of its proper divisors (49912704).

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

20141280 is a wasteful number, since it uses less digits than its factorization.

20141280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20141280 is about 4487.9037422832. The cubic root of 20141280 is about 272.0794174096.

Adding to 20141280 its reverse (8214102), we get a palindrome (28355382).

The spelling of 20141280 in words is "twenty million, one hundred forty-one thousand, two hundred eighty".