20534306 has 16 divisors (see below), whose sum is σ = 33944064. Its totient is φ = 9256464.

The previous prime is 20534303. The next prime is 20534329. The reversal of 20534306 is 60343502.

It is not an unprimeable number, because it can be changed into a prime (20534303) 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, 8066 + ... + 10301.

It is an arithmetic number, because the mean of its divisors is an integer number (2121504).

Almost surely, 2^20534306 is an apocalyptic number.

20534306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20534306 is a deficient number, since it is larger than the sum of its proper divisors (13409758).

20534306 is a wasteful number, since it uses less digits than its factorization.

20534306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18425.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20534306 is about 4531.4794493631. The cubic root of 20534306 is about 273.8377660386.

Adding to 20534306 its reverse (60343502), we get a palindrome (80877808).

The spelling of 20534306 in words is "twenty million, five hundred thirty-four thousand, three hundred six".