20052381 has 8 divisors (see below), whose sum is σ = 27599104. Its totient is φ = 12936960.

The previous prime is 20052341. The next prime is 20052397. The reversal of 20052381 is 18325002.

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

It is not a de Polignac number, because 20052381 - 2⁹ = 20051869 is a prime.

It is a super-2 number, since 2×20052381² = 804195967538322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052341) 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, 107716 + ... + 107901.

It is an arithmetic number, because the mean of its divisors is an integer number (3449888).

Almost surely, 2^20052381 is an apocalyptic number.

It is an amenable number.

20052381 is a deficient number, since it is larger than the sum of its proper divisors (7546723).

20052381 is a wasteful number, since it uses less digits than its factorization.

20052381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215651.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20052381 is about 4477.9884993153. The cubic root of 20052381 is about 271.6785282604.

Adding to 20052381 its reverse (18325002), we get a palindrome (38377383).

The spelling of 20052381 in words is "twenty million, fifty-two thousand, three hundred eighty-one".