20140320 has 48 divisors (see below), whose sum is σ = 63443520. Its totient is φ = 5370624.

The previous prime is 20140303. The next prime is 20140327. The reversal of 20140320 is 2304102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20140296 and 20140305.

It is not an unprimeable number, because it can be changed into a prime (20140327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20500 + ... + 21459.

It is an arithmetic number, because the mean of its divisors is an integer number (1321740).

Almost surely, 2^20140320 is an apocalyptic number.

20140320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20140320 is an abundant number, since it is smaller than the sum of its proper divisors (43303200).

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

20140320 is a wasteful number, since it uses less digits than its factorization.

20140320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41977 (or 41969 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20140320 is about 4487.7967868432. The cubic root of 20140320 is about 272.0750946060.

Adding to 20140320 its reverse (2304102), we get a palindrome (22444422).

The spelling of 20140320 in words is "twenty million, one hundred forty thousand, three hundred twenty".