20481332 has 6 divisors (see below), whose sum is σ = 35842338. Its totient is φ = 10240664.

The previous prime is 20481323. The next prime is 20481341. The reversal of 20481332 is 23318402.

It is an interprime number because it is at equal distance from previous prime (20481323) and next prime (20481341).

It can be written as a sum of positive squares in only one way, i.e., 17255716 + 3225616 = 4154^2 + 1796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20481298 and 20481307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560163 + ... + 2560170.

It is an arithmetic number, because the mean of its divisors is an integer number (5973723).

Almost surely, 2^20481332 is an apocalyptic number.

It is an amenable number.

20481332 is a deficient number, since it is larger than the sum of its proper divisors (15361006).

20481332 is a wasteful number, since it uses less digits than its factorization.

20481332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120337 (or 5120335 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20481332 is about 4525.6305637999. The cubic root of 20481332 is about 273.6020828187.

Adding to 20481332 its reverse (23318402), we get a palindrome (43799734).

The spelling of 20481332 in words is "twenty million, four hundred eighty-one thousand, three hundred thirty-two".