20023212 has 48 divisors (see below), whose sum is σ = 53972352. Its totient is φ = 5710080.

The previous prime is 20023187. The next prime is 20023259. The reversal of 20023212 is 21232002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2218 + ... + 6705.

It is an arithmetic number, because the mean of its divisors is an integer number (1124424).

Almost surely, 2^20023212 is an apocalyptic number.

20023212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20023212 is an abundant number, since it is smaller than the sum of its proper divisors (33949140).

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

20023212 is a wasteful number, since it uses less digits than its factorization.

20023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958 (or 8956 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20023212 is about 4474.7303829393. The cubic root of 20023212 is about 271.5467328296.

Adding to 20023212 its reverse (21232002), we get a palindrome (41255214).

The spelling of 20023212 in words is "twenty million, twenty-three thousand, two hundred twelve".