20854416 has 80 divisors (see below), whose sum is σ = 59424768. Its totient is φ = 6249600.

The previous prime is 20854411. The next prime is 20854429. The reversal of 20854416 is 61445802.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (20854411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66901 + ... + 67211.

Almost surely, 2^20854416 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 20854416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29712384).

20854416 is an abundant number, since it is smaller than the sum of its proper divisors (38570352).

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

20854416 is a wasteful number, since it uses less digits than its factorization.

20854416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20854416 is about 4566.6635523104. The cubic root of 20854416 is about 275.2533906913.

The spelling of 20854416 in words is "twenty million, eight hundred fifty-four thousand, four hundred sixteen".