20361506 has 8 divisors (see below), whose sum is σ = 33318864. Its totient is φ = 9255220.

The previous prime is 20361503. The next prime is 20361511. The reversal of 20361506 is 60516302.

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 (20361503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462740 + ... + 462783.

It is an arithmetic number, because the mean of its divisors is an integer number (4164858).

Almost surely, 2^20361506 is an apocalyptic number.

20361506 is a deficient number, since it is larger than the sum of its proper divisors (12957358).

20361506 is a wasteful number, since it uses less digits than its factorization.

20361506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925536.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20361506 is about 4512.3725466765. The cubic root of 20361506 is about 273.0674693587.

Adding to 20361506 its reverse (60516302), we get a palindrome (80877808).

The spelling of 20361506 in words is "twenty million, three hundred sixty-one thousand, five hundred six".