216253442 has 16 divisors (see below), whose sum is σ = 327499200. Its totient is φ = 107091600.

The previous prime is 216253417. The next prime is 216253451. The reversal of 216253442 is 244352612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125684 + ... + 127392.

It is an arithmetic number, because the mean of its divisors is an integer number (20468700).

Almost surely, 2^216253442 is an apocalyptic number.

216253442 is a deficient number, since it is larger than the sum of its proper divisors (111245758).

216253442 is a wasteful number, since it uses less digits than its factorization.

216253442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281.

The product of its digits is 11520, while the sum is 29.

The square root of 216253442 is about 14705.5582008981. The cubic root of 216253442 is about 600.2345767961.

The spelling of 216253442 in words is "two hundred sixteen million, two hundred fifty-three thousand, four hundred forty-two".