20488216 has 32 divisors (see below), whose sum is σ = 45815040. Its totient is φ = 8398368.

The previous prime is 20488201. The next prime is 20488219. The reversal of 20488216 is 61288402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488219) 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, 6666 + ... + 9241.

It is an arithmetic number, because the mean of its divisors is an integer number (1431720).

Almost surely, 2^20488216 is an apocalyptic number.

It is an amenable number.

20488216 is an abundant number, since it is smaller than the sum of its proper divisors (25326824).

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

20488216 is a wasteful number, since it uses less digits than its factorization.

20488216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15943 (or 15939 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20488216 is about 4526.3910569017. The cubic root of 20488216 is about 273.6327329372.

The spelling of 20488216 in words is "twenty million, four hundred eighty-eight thousand, two hundred sixteen".