216245620 has 24 divisors (see below), whose sum is σ = 461815200. Its totient is φ = 85031712.

The previous prime is 216245611. The next prime is 216245621. The reversal of 216245620 is 26542612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216245621) 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, 90450 + ... + 92809.

It is an arithmetic number, because the mean of its divisors is an integer number (19242300).

Almost surely, 2^216245620 is an apocalyptic number.

216245620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216245620 is an abundant number, since it is smaller than the sum of its proper divisors (245569580).

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

216245620 is a wasteful number, since it uses less digits than its factorization.

216245620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183327 (or 183325 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 216245620 is about 14705.2922446308. The cubic root of 216245620 is about 600.2273397761.

The spelling of 216245620 in words is "two hundred sixteen million, two hundred forty-five thousand, six hundred twenty".