20227400 has 48 divisors (see below), whose sum is σ = 49513200. Its totient is φ = 7663680.

The previous prime is 20227393. The next prime is 20227411. The reversal of 20227400 is 472202.

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, 1139 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (1031525).

Almost surely, 2^20227400 is an apocalyptic number.

20227400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20227400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24756600).

20227400 is an abundant number, since it is smaller than the sum of its proper divisors (29285800).

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

20227400 is a wasteful number, since it uses less digits than its factorization.

20227400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358 (or 5349 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20227400 is about 4497.4881878666. The cubic root of 20227400 is about 272.4666513632.

Adding to 20227400 its reverse (472202), we get a palindrome (20699602).

The spelling of 20227400 in words is "twenty million, two hundred twenty-seven thousand, four hundred".