20227240 has 32 divisors (see below), whose sum is σ = 49649760. Its totient is φ = 7355200.

The previous prime is 20227237. The next prime is 20227241. The reversal of 20227240 is 4272202.

It is not an unprimeable number, because it can be changed into a prime (20227241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22546 + ... + 23425.

It is an arithmetic number, because the mean of its divisors is an integer number (1551555).

Almost surely, 2^20227240 is an apocalyptic number.

20227240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20227240 is an abundant number, since it is smaller than the sum of its proper divisors (29422520).

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

20227240 is a wasteful number, since it uses less digits than its factorization.

20227240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45993 (or 45989 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 20227240 is about 4497.4704001249. The cubic root of 20227240 is about 272.4659329519.

Adding to 20227240 its reverse (4272202), we get a palindrome (24499442).

The spelling of 20227240 in words is "twenty million, two hundred twenty-seven thousand, two hundred forty".