216273900 has 36 divisors (see below), whose sum is σ = 625753352. Its totient is φ = 57672960.

The previous prime is 216273877. The next prime is 216273913. The reversal of 216273900 is 9372612.

216273900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360157 + ... + 360756.

Almost surely, 2^216273900 is an apocalyptic number.

216273900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216273900 is an abundant number, since it is smaller than the sum of its proper divisors (409479452).

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

216273900 is a wasteful number, since it uses less digits than its factorization.

216273900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720930 (or 720923 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 216273900 is about 14706.2537717802. The cubic root of 216273900 is about 600.2535039889.

The spelling of 216273900 in words is "two hundred sixteen million, two hundred seventy-three thousand, nine hundred".