216382620 has 48 divisors (see below), whose sum is σ = 632217600. Its totient is φ = 55192896.

The previous prime is 216382591. The next prime is 216382627. The reversal of 216382620 is 26283612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216382627) 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, 77020 + ... + 79779.

It is an arithmetic number, because the mean of its divisors is an integer number (13171200).

Almost surely, 2^216382620 is an apocalyptic number.

216382620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216382620 is an abundant number, since it is smaller than the sum of its proper divisors (415834980).

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

216382620 is a wasteful number, since it uses less digits than its factorization.

216382620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156834 (or 156832 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 216382620 is about 14709.9496939996. The cubic root of 216382620 is about 600.3540687955.

The spelling of 216382620 in words is "two hundred sixteen million, three hundred eighty-two thousand, six hundred twenty".