20502386 has 8 divisors (see below), whose sum is σ = 31186944. Its totient is φ = 10106740.

The previous prime is 20502379. The next prime is 20502389. The reversal of 20502386 is 68320502.

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

It is not an unprimeable number, because it can be changed into a prime (20502389) 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, 72050 + ... + 72333.

It is an arithmetic number, because the mean of its divisors is an integer number (3898368).

Almost surely, 2^20502386 is an apocalyptic number.

20502386 is a deficient number, since it is larger than the sum of its proper divisors (10684558).

20502386 is a wasteful number, since it uses less digits than its factorization.

20502386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144456.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20502386 is about 4527.9560510235. The cubic root of 20502386 is about 273.6958014231.

Adding to 20502386 its reverse (68320502), we get a palindrome (88822888).

The spelling of 20502386 in words is "twenty million, five hundred two thousand, three hundred eighty-six".