20351382 has 8 divisors (see below), whose sum is σ = 40702776. Its totient is φ = 6783792.

The previous prime is 20351381. The next prime is 20351437. The reversal of 20351382 is 28315302.

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

20351382 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351381) 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, 1695943 + ... + 1695954.

It is an arithmetic number, because the mean of its divisors is an integer number (5087847).

Almost surely, 2^20351382 is an apocalyptic number.

20351382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20351382 is a wasteful number, since it uses less digits than its factorization.

20351382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391902.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20351382 is about 4511.2506026600. The cubic root of 20351382 is about 273.0222043151.

Adding to 20351382 its reverse (28315302), we get a palindrome (48666684).

The spelling of 20351382 in words is "twenty million, three hundred fifty-one thousand, three hundred eighty-two".