20245604 has 24 divisors (see below), whose sum is σ = 37433088. Its totient is φ = 9565920.

The previous prime is 20245571. The next prime is 20245607. The reversal of 20245604 is 40654202.

It is a self number, because there is not a number n which added to its sum of digits gives 20245604.

It is not an unprimeable number, because it can be changed into a prime (20245607) 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, 3434 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (1559712).

Almost surely, 2^20245604 is an apocalyptic number.

It is an amenable number.

20245604 is a deficient number, since it is larger than the sum of its proper divisors (17187484).

20245604 is a wasteful number, since it uses less digits than its factorization.

20245604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20245604 is about 4499.5115290440. The cubic root of 20245604 is about 272.5483638872.

Adding to 20245604 its reverse (40654202), we get a palindrome (60899806).

The spelling of 20245604 in words is "twenty million, two hundred forty-five thousand, six hundred four".