20323100 has 36 divisors (see below), whose sum is σ = 50403024. Its totient is φ = 6967680.

The previous prime is 20323091. The next prime is 20323139. The reversal of 20323100 is 132302.

20323100 = 214² + 215² + ... + 413².

It is a super-2 number, since 2×20323100² = 826056787220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13817 + ... + 15216.

It is an arithmetic number, because the mean of its divisors is an integer number (1400084).

Almost surely, 2^20323100 is an apocalyptic number.

20323100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323100 is an abundant number, since it is smaller than the sum of its proper divisors (30079924).

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

20323100 is a wasteful number, since it uses less digits than its factorization.

20323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29054 (or 29047 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20323100 is about 4508.1149053679. The cubic root of 20323100 is about 272.8956741100.

Adding to 20323100 its reverse (132302), we get a palindrome (20455402).

The spelling of 20323100 in words is "twenty million, three hundred twenty-three thousand, one hundred".