20360381 has 8 divisors (see below), whose sum is σ = 21489600. Its totient is φ = 19236960.

The previous prime is 20360377. The next prime is 20360399. The reversal of 20360381 is 18306302.

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 20360381 - 2² = 20360377 is a prime.

It is a super-2 number, since 2×20360381² = 829090228930322, 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 (20360881) 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, 7121 + ... + 9561.

It is an arithmetic number, because the mean of its divisors is an integer number (2686200).

Almost surely, 2^20360381 is an apocalyptic number.

It is an amenable number.

20360381 is a deficient number, since it is larger than the sum of its proper divisors (1129219).

20360381 is a wasteful number, since it uses less digits than its factorization.

20360381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20360381 is about 4512.2478876941. The cubic root of 20360381 is about 273.0624401538.

Adding to 20360381 its reverse (18306302), we get a palindrome (38666683).

The spelling of 20360381 in words is "twenty million, three hundred sixty thousand, three hundred eighty-one".