20468216 has 8 divisors (see below), whose sum is σ = 38377920. Its totient is φ = 10234104.

The previous prime is 20468213. The next prime is 20468219. The reversal of 20468216 is 61286402.

It is an interprime number because it is at equal distance from previous prime (20468213) and next prime (20468219).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20468213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279256 + ... + 1279271.

It is an arithmetic number, because the mean of its divisors is an integer number (4797240).

Almost surely, 2^20468216 is an apocalyptic number.

It is an amenable number.

20468216 is a deficient number, since it is larger than the sum of its proper divisors (17909704).

20468216 is a wasteful number, since it uses less digits than its factorization.

20468216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558533 (or 2558529 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20468216 is about 4524.1812518952. The cubic root of 20468216 is about 273.5436665137.

The spelling of 20468216 in words is "twenty million, four hundred sixty-eight thousand, two hundred sixteen".