826978 has 8 divisors (see below), whose sum is σ = 1244880. Its totient is φ = 412020.

The previous prime is 826967. The next prime is 826979. The reversal of 826978 is 879628.

826978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×826978² = 1367785224968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 826978.

It is not an unprimeable number, because it can be changed into a prime (826979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

2⁸²⁶⁹⁷⁸ is an apocalyptic number.

826978 is a deficient number, since it is larger than the sum of its proper divisors (417902).

826978 is a wasteful number, since it uses less digits than its factorization.

826978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its digits is 48384, while the sum is 40.

The square root of 826978 is about 909.3833075222. The cubic root of 826978 is about 93.8637682536.

Subtracting 826978 from its reverse (879628), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 826978 in words is "eight hundred twenty-six thousand, nine hundred seventy-eight".