20204700 has 36 divisors (see below), whose sum is σ = 58459800. Its totient is φ = 5387840.

The previous prime is 20204671. The next prime is 20204707. The reversal of 20204700 is 740202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20204700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33375 + ... + 33974.

Almost surely, 2^20204700 is an apocalyptic number.

20204700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20204700 is an abundant number, since it is smaller than the sum of its proper divisors (38255100).

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

20204700 is a wasteful number, since it uses less digits than its factorization.

20204700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67366 (or 67359 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 20204700 is about 4494.9638485754. The cubic root of 20204700 is about 272.3646888748.

Adding to 20204700 its reverse (740202), we get a palindrome (20944902).

The spelling of 20204700 in words is "twenty million, two hundred four thousand, seven hundred".