20427212 has 12 divisors (see below), whose sum is σ = 38497536. Its totient is φ = 9427920.

The previous prime is 20427181. The next prime is 20427229. The reversal of 20427212 is 21272402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196364 + ... + 196467.

It is an arithmetic number, because the mean of its divisors is an integer number (3208128).

Almost surely, 2^20427212 is an apocalyptic number.

It is an amenable number.

20427212 is a deficient number, since it is larger than the sum of its proper divisors (18070324).

20427212 is a wasteful number, since it uses less digits than its factorization.

20427212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392848 (or 392846 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 20427212 is about 4519.6473313744. The cubic root of 20427212 is about 273.3608809568.

Adding to 20427212 its reverse (21272402), we get a palindrome (41699614).

The spelling of 20427212 in words is "twenty million, four hundred twenty-seven thousand, two hundred twelve".