216041720 has 16 divisors (see below), whose sum is σ = 486093960. Its totient is φ = 86416672.

The previous prime is 216041717. The next prime is 216041741. The reversal of 216041720 is 27140612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2700482 + ... + 2700561.

Almost surely, 2^216041720 is an apocalyptic number.

216041720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216041720 is an abundant number, since it is smaller than the sum of its proper divisors (270052240).

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

216041720 is a wasteful number, since it uses less digits than its factorization.

216041720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401054 (or 5401050 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 216041720 is about 14698.3577313930. The cubic root of 216041720 is about 600.0386271428.

The spelling of 216041720 in words is "two hundred sixteen million, forty-one thousand, seven hundred twenty".