617728342 has 128 divisors (see below), whose sum is σ = 1297244160. Its totient is φ = 213269760.

The previous prime is 617728327. The next prime is 617728343. The reversal of 617728342 is 243827716.

It is a junction number, because it is equal to n+sod(n) for n = 617728295 and 617728304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617728343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4508898 + ... + 4509034.

It is an arithmetic number, because the mean of its divisors is an integer number (10134720).

Almost surely, 2^617728342 is an apocalyptic number.

617728342 is an abundant number, since it is smaller than the sum of its proper divisors (679515818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

617728342 is a wasteful number, since it uses less digits than its factorization.

617728342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 112896, while the sum is 40.

The square root of 617728342 is about 24854.1413450556. The cubic root of 617728342 is about 851.6592006542.

The spelling of 617728342 in words is "six hundred seventeen million, seven hundred twenty-eight thousand, three hundred forty-two".