20534304 has 48 divisors (see below), whose sum is σ = 61604928. Its totient is φ = 5866752.

The previous prime is 20534303. The next prime is 20534329. The reversal of 20534304 is 40343502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 14607 + ... + 15950.

It is an arithmetic number, because the mean of its divisors is an integer number (1283436).

Almost surely, 2^20534304 is an apocalyptic number.

20534304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20534304 is an abundant number, since it is smaller than the sum of its proper divisors (41070624).

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

20534304 is a wasteful number, since it uses less digits than its factorization.

20534304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30577 (or 30569 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20534304 is about 4531.4792286846. The cubic root of 20534304 is about 273.8377571482.

Adding to 20534304 its reverse (40343502), we get a palindrome (60877806).

The spelling of 20534304 in words is "twenty million, five hundred thirty-four thousand, three hundred four".