20413480 has 32 divisors (see below), whose sum is σ = 46801800. Its totient is φ = 8010496.

The previous prime is 20413457. The next prime is 20413499. The reversal of 20413480 is 8431402.

It can be written as a sum of positive squares in 4 ways, for example, as 20412324 + 1156 = 4518^2 + 34^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695 + ... + 6934.

Almost surely, 2^20413480 is an apocalyptic number.

20413480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413480 is an abundant number, since it is smaller than the sum of its proper divisors (26388320).

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

20413480 is a wasteful number, since it uses less digits than its factorization.

20413480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693 (or 9689 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20413480 is about 4518.1279309024. The cubic root of 20413480 is about 273.2996124704.

Adding to 20413480 its reverse (8431402), we get a palindrome (28844882).

The spelling of 20413480 in words is "twenty million, four hundred thirteen thousand, four hundred eighty".