216379450 has 24 divisors (see below), whose sum is σ = 459961632. Its totient is φ = 74187120.

The previous prime is 216379421. The next prime is 216379453. The reversal of 216379450 is 54973612.

216379450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216379453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308764 + ... + 309463.

It is an arithmetic number, because the mean of its divisors is an integer number (19165068).

Almost surely, 2^216379450 is an apocalyptic number.

216379450 is an abundant number, since it is smaller than the sum of its proper divisors (243582182).

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

216379450 is a wasteful number, since it uses less digits than its factorization.

216379450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618246 (or 618241 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 216379450 is about 14709.8419434065. The cubic root of 216379450 is about 600.3511370571.

The spelling of 216379450 in words is "two hundred sixteen million, three hundred seventy-nine thousand, four hundred fifty".