20202480 has 160 divisors (see below), whose sum is σ = 71424000. Its totient is φ = 5246208.

The previous prime is 20202467. The next prime is 20202493. The reversal of 20202480 is 8420202.

It is an interprime number because it is at equal distance from previous prime (20202467) and next prime (20202493).

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 31 ways as a sum of consecutive naturals, for example, 101421 + ... + 101619.

It is an arithmetic number, because the mean of its divisors is an integer number (446400).

Almost surely, 2^20202480 is an apocalyptic number.

20202480 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 20202480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35712000).

20202480 is an abundant number, since it is smaller than the sum of its proper divisors (51221520).

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

20202480 is a wasteful number, since it uses less digits than its factorization.

20202480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 20202480 is about 4494.7168987601. The cubic root of 20202480 is about 272.3547131142.

Adding to 20202480 its reverse (8420202), we get a palindrome (28622682).

It can be divided in two parts, 20 and 202480, that added together give a square (202500 = 450²).

The spelling of 20202480 in words is "twenty million, two hundred two thousand, four hundred eighty".