216842344 has 64 divisors (see below), whose sum is σ = 452874240. Its totient is φ = 96814080.

The previous prime is 216842341. The next prime is 216842371. The reversal of 216842344 is 443248612.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (216842341) 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, 565977 + ... + 566359.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^216842344 is an apocalyptic number.

It is an amenable number.

216842344 is an abundant number, since it is smaller than the sum of its proper divisors (236031896).

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

216842344 is a wasteful number, since it uses less digits than its factorization.

216842344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 606 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 216842344 is about 14725.5676970363. The cubic root of 216842344 is about 600.7789364738.

The spelling of 216842344 in words is "two hundred sixteen million, eight hundred forty-two thousand, three hundred forty-four".