20467216 has 80 divisors (see below), whose sum is σ = 50889600. Its totient is φ = 7741440.

The previous prime is 20467189. The next prime is 20467247. The reversal of 20467216 is 61276402.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 45360 + ... + 45808.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^20467216 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 20467216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25444800).

20467216 is an abundant number, since it is smaller than the sum of its proper divisors (30422384).

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

20467216 is a wasteful number, since it uses less digits than its factorization.

20467216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20467216 is about 4524.0707333109. The cubic root of 20467216 is about 273.5392116698.

The spelling of 20467216 in words is "twenty million, four hundred sixty-seven thousand, two hundred sixteen".