104978 has 4 divisors (see below), whose sum is σ = 157470. Its totient is φ = 52488.

The previous prime is 104971. The next prime is 104987. The reversal of 104978 is 879401.

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., 100489 + 4489 = 317^2 + 67^2 .

It is a super-2 number, since 2×104978² = 22040760968, 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 104978.

It is not an unprimeable number, because it can be changed into a prime (104971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26243 + ... + 26246.

104978 is a Friedman number, since it can be written as 9+(10+8)^4-7, using all its digits and the basic arithmetic operations.

2¹⁰⁴⁹⁷⁸ is an apocalyptic number.

104978 is a deficient number, since it is larger than the sum of its proper divisors (52492).

104978 is an equidigital number, since it uses as much as digits as its factorization.

104978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52491.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 104978 is about 324.0030864051. The cubic root of 104978 is about 47.1736446756.

The spelling of 104978 in words is "one hundred four thousand, nine hundred seventy-eight".