20243100 has 36 divisors (see below), whose sum is σ = 58570904. Its totient is φ = 5398080.

The previous prime is 20243089. The next prime is 20243101. The reversal of 20243100 is 134202.

It is a super-2 number, since 2×20243100² = 819566195220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33439 + ... + 34038.

Almost surely, 2^20243100 is an apocalyptic number.

20243100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243100 is an abundant number, since it is smaller than the sum of its proper divisors (38327804).

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

20243100 is a wasteful number, since it uses less digits than its factorization.

20243100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67494 (or 67487 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20243100 is about 4499.2332680136. The cubic root of 20243100 is about 272.5371270571.

Adding to 20243100 its reverse (134202), we get a palindrome (20377302).

The spelling of 20243100 in words is "twenty million, two hundred forty-three thousand, one hundred".