20523196 has 12 divisors (see below), whose sum is σ = 35947800. Its totient is φ = 10252400.

The previous prime is 20523193. The next prime is 20523203. The reversal of 20523196 is 69132502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6255 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (2995650).

Almost surely, 2^20523196 is an apocalyptic number.

It is an amenable number.

20523196 is a deficient number, since it is larger than the sum of its proper divisors (15424604).

20523196 is a wasteful number, since it uses less digits than its factorization.

20523196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20523196 is about 4530.2534145454. The cubic root of 20523196 is about 273.7883708715.

Adding to 20523196 its reverse (69132502), we get a palindrome (89655698).

The spelling of 20523196 in words is "twenty million, five hundred twenty-three thousand, one hundred ninety-six".