978358 has 4 divisors (see below), whose sum is σ = 1467540. Its totient is φ = 489178.

The previous prime is 978349. The next prime is 978359. The reversal of 978358 is 853879.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a plaindrome in base 8.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 978358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978359) by changing a digit.

978358 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244588 + ... + 244591.

It is an arithmetic number, because the mean of its divisors is an integer number (366885).

2⁹⁷⁸³⁵⁸ is an apocalyptic number.

978358 is a deficient number, since it is larger than the sum of its proper divisors (489182).

978358 is a wasteful number, since it uses less digits than its factorization.

978358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489181.

The product of its digits is 60480, while the sum is 40.

The square root of 978358 is about 989.1198107408. The cubic root of 978358 is about 99.2733323315.

The spelling of 978358 in words is "nine hundred seventy-eight thousand, three hundred fifty-eight".