216953074 has 12 divisors (see below), whose sum is σ = 352388826. Its totient is φ = 100132032.

The previous prime is 216953071. The next prime is 216953083. The reversal of 216953074 is 470359612.

It can be written as a sum of positive squares in 3 ways, for example, as 114639849 + 102313225 = 10707^2 + 10115^2 .

It is not an unprimeable number, because it can be changed into a prime (216953071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320599 + ... + 321274.

Almost surely, 2^216953074 is an apocalyptic number.

216953074 is a deficient number, since it is larger than the sum of its proper divisors (135435752).

216953074 is a wasteful number, since it uses less digits than its factorization.

216953074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641901 (or 641888 counting only the distinct ones).

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

The square root of 216953074 is about 14729.3270043135. The cubic root of 216953074 is about 600.8811811587.

The spelling of 216953074 in words is "two hundred sixteen million, nine hundred fifty-three thousand, seventy-four".