216794100 has 72 divisors (see below), whose sum is σ = 644243488. Its totient is φ = 56246400.

The previous prime is 216794093. The next prime is 216794107. The reversal of 216794100 is 1497612.

It is a happy number.

216794100 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216794093) and next prime (216794107).

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 (216794107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1335 + ... + 20865.

Almost surely, 2^216794100 is an apocalyptic number.

216794100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216794100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322121744).

216794100 is an abundant number, since it is smaller than the sum of its proper divisors (427449388).

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

216794100 is a wasteful number, since it uses less digits than its factorization.

216794100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19585 (or 19578 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 216794100 is about 14723.9295026837. The cubic root of 216794100 is about 600.7343785579.

The spelling of 216794100 in words is "two hundred sixteen million, seven hundred ninety-four thousand, one hundred".