1178978 has 8 divisors (see below), whose sum is σ = 1775568. Its totient is φ = 587124.

The previous prime is 1178977. The next prime is 1178981. The reversal of 1178978 is 8798711.

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

It is not an unprimeable number, because it can be changed into a prime (1178971) 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, 476 + ... + 1607.

It is an arithmetic number, because the mean of its divisors is an integer number (221946).

2^1178978 is an apocalyptic number.

1178978 is a deficient number, since it is larger than the sum of its proper divisors (596590).

1178978 is a wasteful number, since it uses less digits than its factorization.

1178978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its digits is 28224, while the sum is 41.

The square root of 1178978 is about 1085.8075335896. The cubic root of 1178978 is about 105.6416640958.

The spelling of 1178978 in words is "one million, one hundred seventy-eight thousand, nine hundred seventy-eight".