216137074 has 16 divisors (see below), whose sum is σ = 331021080. Its totient is φ = 105805440.

The previous prime is 216137041. The next prime is 216137101. The reversal of 216137074 is 470731612.

It can be written as a sum of positive squares in 4 ways, for example, as 211266225 + 4870849 = 14535^2 + 2207^2 .

It is an unprimeable number.

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, 55462 + ... + 59230.

Almost surely, 2^216137074 is an apocalyptic number.

216137074 is a deficient number, since it is larger than the sum of its proper divisors (114884006).

216137074 is a wasteful number, since it uses less digits than its factorization.

216137074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 216137074 is about 14701.6010692713. The cubic root of 216137074 is about 600.1268935319.

Adding to 216137074 its reverse (470731612), we get a palindrome (686868686).

The spelling of 216137074 in words is "two hundred sixteen million, one hundred thirty-seven thousand, seventy-four".