20430212 has 24 divisors (see below), whose sum is σ = 39154752. Its totient is φ = 9250400.

The previous prime is 20430191. The next prime is 20430251. The reversal of 20430212 is 21203402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12938 + ... + 14430.

It is an arithmetic number, because the mean of its divisors is an integer number (1631448).

Almost surely, 2^20430212 is an apocalyptic number.

20430212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20430212 is a deficient number, since it is larger than the sum of its proper divisors (18724540).

20430212 is a wasteful number, since it uses less digits than its factorization.

20430212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20430212 is about 4519.9792034920. The cubic root of 20430212 is about 273.3742624941.

Adding to 20430212 its reverse (21203402), we get a palindrome (41633614).

The spelling of 20430212 in words is "twenty million, four hundred thirty thousand, two hundred twelve".