20481324 has 12 divisors (see below), whose sum is σ = 47789784. Its totient is φ = 6827104.

The previous prime is 20481323. The next prime is 20481341. The reversal of 20481324 is 42318402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20481294 and 20481303.

It is not an unprimeable number, because it can be changed into a prime (20481323) 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, 853377 + ... + 853400.

It is an arithmetic number, because the mean of its divisors is an integer number (3982482).

Almost surely, 2^20481324 is an apocalyptic number.

It is an amenable number.

20481324 is an abundant number, since it is smaller than the sum of its proper divisors (27308460).

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

20481324 is a wasteful number, since it uses less digits than its factorization.

20481324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706784 (or 1706782 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20481324 is about 4525.6296799451. The cubic root of 20481324 is about 273.6020471958.

Adding to 20481324 its reverse (42318402), we get a palindrome (62799726).

The spelling of 20481324 in words is "twenty million, four hundred eighty-one thousand, three hundred twenty-four".