217374442 has 8 divisors (see below), whose sum is σ = 326279232. Its totient is φ = 108614700.

The previous prime is 217374439. The next prime is 217374463. The reversal of 217374442 is 244473712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×217374442² = 94503296069622728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217374398 and 217374407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32434 + ... + 38557.

It is an arithmetic number, because the mean of its divisors is an integer number (40784904).

Almost surely, 2^217374442 is an apocalyptic number.

217374442 is a deficient number, since it is larger than the sum of its proper divisors (108904790).

217374442 is a wasteful number, since it uses less digits than its factorization.

217374442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72524.

The product of its digits is 37632, while the sum is 34.

The square root of 217374442 is about 14743.6237743643. The cubic root of 217374442 is about 601.2699416654.

The spelling of 217374442 in words is "two hundred seventeen million, three hundred seventy-four thousand, four hundred forty-two".