216069580 has 24 divisors (see below), whose sum is σ = 454159440. Its totient is φ = 86349120.

The previous prime is 216069571. The next prime is 216069583. The reversal of 216069580 is 85960612.

It is not an unprimeable number, because it can be changed into a prime (216069583) 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, 20890 + ... + 29470.

It is an arithmetic number, because the mean of its divisors is an integer number (18923310).

Almost surely, 2^216069580 is an apocalyptic number.

216069580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216069580 is an abundant number, since it is smaller than the sum of its proper divisors (238089860).

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

216069580 is a wasteful number, since it uses less digits than its factorization.

216069580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849 (or 9847 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 216069580 is about 14699.3054257676. The cubic root of 216069580 is about 600.0644190093.

The spelling of 216069580 in words is "two hundred sixteen million, sixty-nine thousand, five hundred eighty".