20362481 has 8 divisors (see below), whose sum is σ = 21606984. Its totient is φ = 19123200.

The previous prime is 20362457. The next prime is 20362513. The reversal of 20362481 is 18426302.

It can be written as a sum of positive squares in 4 ways, for example, as 11458225 + 8904256 = 3385^2 + 2984^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20362481 - 2⁶ = 20362417 is a prime.

It is a super-2 number, since 2×20362481² = 829261264950722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20362481.

It is not an unprimeable number, because it can be changed into a prime (20362411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9221 + ... + 11213.

It is an arithmetic number, because the mean of its divisors is an integer number (2700873).

Almost surely, 2^20362481 is an apocalyptic number.

It is an amenable number.

20362481 is a deficient number, since it is larger than the sum of its proper divisors (1244503).

20362481 is a wasteful number, since it uses less digits than its factorization.

20362481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20362481 is about 4512.4805816757. The cubic root of 20362481 is about 273.0718278532.

Adding to 20362481 its reverse (18426302), we get a palindrome (38788783).

The spelling of 20362481 in words is "twenty million, three hundred sixty-two thousand, four hundred eighty-one".