20070912 has 80 divisors (see below), whose sum is σ = 54505440. Its totient is φ = 6561792.

The previous prime is 20070907. The next prime is 20070913. The reversal of 20070912 is 21907002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20070913) 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, 112039 + ... + 112217.

It is an arithmetic number, because the mean of its divisors is an integer number (681318).

Almost surely, 2^20070912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20070912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27252720).

20070912 is an abundant number, since it is smaller than the sum of its proper divisors (34434528).

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

20070912 is an equidigital number, since it uses as much as digits as its factorization.

20070912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 20070912 is about 4480.0571424927. The cubic root of 20070912 is about 271.7621912224.

Adding to 20070912 its reverse (21907002), we get a palindrome (41977914).

The spelling of 20070912 in words is "twenty million, seventy thousand, nine hundred twelve".