216937430 has 16 divisors (see below), whose sum is σ = 398796480. Its totient is φ = 84928512.

The previous prime is 216937417. The next prime is 216937433. The reversal of 216937430 is 34739612.

216937430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216937433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230315 + ... + 231254.

It is an arithmetic number, because the mean of its divisors is an integer number (24924780).

Almost surely, 2^216937430 is an apocalyptic number.

216937430 is a deficient number, since it is larger than the sum of its proper divisors (181859050).

216937430 is a wasteful number, since it uses less digits than its factorization.

216937430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461623.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 216937430 is about 14728.7959453582. The cubic root of 216937430 is about 600.8667380797.

The spelling of 216937430 in words is "two hundred sixteen million, nine hundred thirty-seven thousand, four hundred thirty".