20227700 has 18 divisors (see below), whose sum is σ = 43894326. Its totient is φ = 8091040.

The previous prime is 20227693. The next prime is 20227709. The reversal of 20227700 is 772202.

It can be written as a sum of positive squares in 3 ways, for example, as 6180196 + 14047504 = 2486^2 + 3748^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20227709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101039 + ... + 101238.

Almost surely, 2^20227700 is an apocalyptic number.

20227700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20227700 is an abundant number, since it is smaller than the sum of its proper divisors (23666626).

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

20227700 is a wasteful number, since it uses less digits than its factorization.

20227700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202291 (or 202284 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 20227700 is about 4497.5215396927. The cubic root of 20227700 is about 272.4679983742.

Adding to 20227700 its reverse (772202), we get a palindrome (20999902).

The spelling of 20227700 in words is "twenty million, two hundred twenty-seven thousand, seven hundred".