978828085 has 16 divisors (see below), whose sum is σ = 1183392000. Its totient is φ = 777220416.

The previous prime is 978828083. The next prime is 978828101. The reversal of 978828085 is 580828879.

It is a cyclic number.

It is not a de Polignac number, because 978828085 - 2¹ = 978828083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978828083) 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 15 ways as a sum of consecutive naturals, for example, 415882 + ... + 418228.

It is an arithmetic number, because the mean of its divisors is an integer number (73962000).

Almost surely, 2^978828085 is an apocalyptic number.

It is an amenable number.

978828085 is a deficient number, since it is larger than the sum of its proper divisors (204563915).

978828085 is a wasteful number, since it uses less digits than its factorization.

978828085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940.

The product of its (nonzero) digits is 2580480, while the sum is 55.

The square root of 978828085 is about 31286.2283600948. The cubic root of 978828085 is about 992.8922952253.

It can be divided in two parts, 9788 and 28085, that added together give a palindrome (37873).

The spelling of 978828085 in words is "nine hundred seventy-eight million, eight hundred twenty-eight thousand, eighty-five".