20914912 has 48 divisors (see below), whose sum is σ = 43479072. Its totient is φ = 9884160.

The previous prime is 20914903. The next prime is 20914919. The reversal of 20914912 is 21941902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20914919) 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, 115462 + ... + 115642.

It is an arithmetic number, because the mean of its divisors is an integer number (905814).

Almost surely, 2^20914912 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 20914912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21739536).

20914912 is an abundant number, since it is smaller than the sum of its proper divisors (22564160).

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

20914912 is a wasteful number, since it uses less digits than its factorization.

20914912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 20914912 is about 4573.2824098234. The cubic root of 20914912 is about 275.5192920637.

The spelling of 20914912 in words is "twenty million, nine hundred fourteen thousand, nine hundred twelve".