20052100 has 36 divisors (see below), whose sum is σ = 43747200. Its totient is φ = 7977760.

The previous prime is 20052091. The next prime is 20052101. The reversal of 20052100 is 125002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052101) 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, 23481 + ... + 24319.

It is an arithmetic number, because the mean of its divisors is an integer number (1215200).

Almost surely, 2^20052100 is an apocalyptic number.

20052100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20052100 is an abundant number, since it is smaller than the sum of its proper divisors (23695100).

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

20052100 is a wasteful number, since it uses less digits than its factorization.

20052100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20052100 is about 4477.9571235107. The cubic root of 20052100 is about 271.6772592170.

Adding to 20052100 its reverse (125002), we get a palindrome (20177102).

The spelling of 20052100 in words is "twenty million, fifty-two thousand, one hundred".