20350546 has 4 divisors (see below), whose sum is σ = 30525822. Its totient is φ = 10175272.

The previous prime is 20350541. The next prime is 20350559. The reversal of 20350546 is 64505302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64505302 = 2 ⋅32252651.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 1297321 = 4365^2 + 1139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20350546.

It is not an unprimeable number, because it can be changed into a prime (20350541) 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 as a sum of consecutive naturals, namely, 5087635 + ... + 5087638.

Almost surely, 2^20350546 is an apocalyptic number.

20350546 is a deficient number, since it is larger than the sum of its proper divisors (10175276).

20350546 is a wasteful number, since it uses less digits than its factorization.

20350546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10175275.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20350546 is about 4511.1579444750. The cubic root of 20350546 is about 273.0184658353.

Adding to 20350546 its reverse (64505302), we get a palindrome (84855848).

The spelling of 20350546 in words is "twenty million, three hundred fifty thousand, five hundred forty-six".