20504324 has 6 divisors (see below), whose sum is σ = 35882574. Its totient is φ = 10252160.

The previous prime is 20504221. The next prime is 20504353. The reversal of 20504324 is 42340502.

It can be written as a sum of positive squares in only one way, i.e., 16662724 + 3841600 = 4082^2 + 1960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20504296 and 20504305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2563037 + ... + 2563044.

It is an arithmetic number, because the mean of its divisors is an integer number (5980429).

Almost surely, 2^20504324 is an apocalyptic number.

It is an amenable number.

20504324 is a deficient number, since it is larger than the sum of its proper divisors (15378250).

20504324 is a wasteful number, since it uses less digits than its factorization.

20504324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126085 (or 5126083 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20504324 is about 4528.1700498104. The cubic root of 20504324 is about 273.7044249032.

Adding to 20504324 its reverse (42340502), we get a palindrome (62844826).

The spelling of 20504324 in words is "twenty million, five hundred four thousand, three hundred twenty-four".