20273212 has 12 divisors (see below), whose sum is σ = 37020816. Its totient is φ = 9695840.

The previous prime is 20273207. The next prime is 20273213. The reversal of 20273212 is 21237202.

It is a super-2 number, since 2×20273212² = 822006249593888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20273212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110089 + ... + 110272.

It is an arithmetic number, because the mean of its divisors is an integer number (3085068).

Almost surely, 2^20273212 is an apocalyptic number.

It is an amenable number.

20273212 is a deficient number, since it is larger than the sum of its proper divisors (16747604).

20273212 is a wasteful number, since it uses less digits than its factorization.

20273212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220388 (or 220386 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20273212 is about 4502.5783724439. The cubic root of 20273212 is about 272.6721948440.

The spelling of 20273212 in words is "twenty million, two hundred seventy-three thousand, two hundred twelve".