1456978 has 4 divisors (see below), whose sum is σ = 2185470. Its totient is φ = 728488.

The previous prime is 1456963. The next prime is 1457011. The reversal of 1456978 is 8796541.

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

It can be written as a sum of positive squares in only one way, i.e., 1172889 + 284089 = 1083^2 + 533^2 .

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 a self number, because there is not a number n which added to its sum of digits gives 1456978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364243 + ... + 364246.

2^1456978 is an apocalyptic number.

1456978 is a deficient number, since it is larger than the sum of its proper divisors (728492).

1456978 is an equidigital number, since it uses as much as digits as its factorization.

1456978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728491.

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

The square root of 1456978 is about 1207.0534370938. The cubic root of 1456978 is about 113.3663936615.

The spelling of 1456978 in words is "one million, four hundred fifty-six thousand, nine hundred seventy-eight".