217450934 has 16 divisors (see below), whose sum is σ = 344116080. Its totient is φ = 102771360.

The previous prime is 217450913. The next prime is 217450949. The reversal of 217450934 is 439054712.

It is a junction number, because it is equal to n+sod(n) for n = 217450894 and 217450903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11312 + ... + 23724.

It is an arithmetic number, because the mean of its divisors is an integer number (21507255).

Almost surely, 2^217450934 is an apocalyptic number.

217450934 is a deficient number, since it is larger than the sum of its proper divisors (126665146).

217450934 is a wasteful number, since it uses less digits than its factorization.

217450934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 217450934 is about 14746.2176167314. The cubic root of 217450934 is about 601.3404604535.

The spelling of 217450934 in words is "two hundred seventeen million, four hundred fifty thousand, nine hundred thirty-four".