978356 has 6 divisors (see below), whose sum is σ = 1712130. Its totient is φ = 489176.

The previous prime is 978349. The next prime is 978359. The reversal of 978356 is 653879.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 17956 = 980^2 + 134^2 .

It is an Ulam number.

It is a nialpdrome in base 16.

It is a congruent number.

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

978356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122291 + ... + 122298.

It is an arithmetic number, because the mean of its divisors is an integer number (285355).

2⁹⁷⁸³⁵⁶ is an apocalyptic number.

It is an amenable number.

978356 is a deficient number, since it is larger than the sum of its proper divisors (733774).

978356 is a wasteful number, since it uses less digits than its factorization.

978356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244593 (or 244591 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 978356 is about 989.1187997405. The cubic root of 978356 is about 99.2732646852.

The spelling of 978356 in words is "nine hundred seventy-eight thousand, three hundred fifty-six".