20523304 has 16 divisors (see below), whose sum is σ = 38574720. Its totient is φ = 10236720.

The previous prime is 20523299. The next prime is 20523317. The reversal of 20523304 is 40332502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (2410920).

Almost surely, 2^20523304 is an apocalyptic number.

It is an amenable number.

20523304 is a deficient number, since it is larger than the sum of its proper divisors (18051416).

20523304 is a wasteful number, since it uses less digits than its factorization.

20523304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240 (or 6236 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20523304 is about 4530.2653343927. The cubic root of 20523304 is about 273.7888511264.

Adding to 20523304 its reverse (40332502), we get a palindrome (60855806).

It can be divided in two parts, 2052 and 3304, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 20523304 in words is "twenty million, five hundred twenty-three thousand, three hundred four".