216366000 has 80 divisors (see below), whose sum is σ = 697583328. Its totient is φ = 57696000.

The previous prime is 216365999. The next prime is 216366011. The reversal of 216366000 is 663612.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12031 + ... + 24030.

Almost surely, 2^216366000 is an apocalyptic number.

216366000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216366000 is an abundant number, since it is smaller than the sum of its proper divisors (481217328).

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

216366000 is a wasteful number, since it uses less digits than its factorization.

216366000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36087 (or 36071 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 216366000 is about 14709.3847593977. The cubic root of 216366000 is about 600.3386976594.

The spelling of 216366000 in words is "two hundred sixteen million, three hundred sixty-six thousand".