20133700 has 18 divisors (see below), whose sum is σ = 43690346. Its totient is φ = 8053440.

The previous prime is 20133689. The next prime is 20133713. The reversal of 20133700 is 733102.

It can be written as a sum of positive squares in 3 ways, for example, as 473344 + 19660356 = 688^2 + 4434^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100569 + ... + 100768.

Almost surely, 2^20133700 is an apocalyptic number.

20133700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133700 is an abundant number, since it is smaller than the sum of its proper divisors (23556646).

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

20133700 is a wasteful number, since it uses less digits than its factorization.

20133700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201351 (or 201344 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 20133700 is about 4487.0591705481. The cubic root of 20133700 is about 272.0452815328.

Adding to 20133700 its reverse (733102), we get a palindrome (20866802).

The spelling of 20133700 in words is "twenty million, one hundred thirty-three thousand, seven hundred".