20020480 has 36 divisors (see below), whose sum is σ = 47958372. Its totient is φ = 8007680.

The previous prime is 20020463. The next prime is 20020487. The reversal of 20020480 is 8402002.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 4528384 = 3936^2 + 2128^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6541 + ... + 9100.

It is an arithmetic number, because the mean of its divisors is an integer number (1332177).

Almost surely, 2^20020480 is an apocalyptic number.

20020480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020480 is an abundant number, since it is smaller than the sum of its proper divisors (27937892).

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

20020480 is an equidigital number, since it uses as much as digits as its factorization.

20020480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662 (or 15648 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20020480 is about 4474.4251027367. The cubic root of 20020480 is about 271.5343821735.

Adding to 20020480 its reverse (8402002), we get a palindrome (28422482).

It can be divided in two parts, 200 and 20480, that multiplied together give a cube (4096000 = 160³).

The spelling of 20020480 in words is "twenty million, twenty thousand, four hundred eighty".