978448107 has 32 divisors (see below), whose sum is σ = 1700116992. Its totient is φ = 485743104.

The previous prime is 978448103. The next prime is 978448117. The reversal of 978448107 is 701844879.

It is not a de Polignac number, because 978448107 - 2² = 978448103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978448103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100773 + ... + 110054.

It is an arithmetic number, because the mean of its divisors is an integer number (53128656).

Almost surely, 2^978448107 is an apocalyptic number.

978448107 is a deficient number, since it is larger than the sum of its proper divisors (721668885).

978448107 is a wasteful number, since it uses less digits than its factorization.

978448107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210867.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 978448107 is about 31280.1551626586. The cubic root of 978448107 is about 992.7637993692.

The spelling of 978448107 in words is "nine hundred seventy-eight million, four hundred forty-eight thousand, one hundred seven".