985778260 has 12 divisors (see below), whose sum is σ = 2070134388. Its totient is φ = 394311296.

The previous prime is 985778257. The next prime is 985778263. The reversal of 985778260 is 62877589.

It is an interprime number because it is at equal distance from previous prime (985778257) and next prime (985778263).

It can be written as a sum of positive squares in 2 ways, for example, as 185340996 + 800437264 = 13614^2 + 28292^2 .

It is a super-3 number, since 3×985778260³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 985778198 and 985778207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985778263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24644437 + ... + 24644476.

It is an arithmetic number, because the mean of its divisors is an integer number (172511199).

Almost surely, 2^985778260 is an apocalyptic number.

It is an amenable number.

985778260 is an abundant number, since it is smaller than the sum of its proper divisors (1084356128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985778260 is a wasteful number, since it uses less digits than its factorization.

985778260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49288922 (or 49288920 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 985778260 is about 31397.1059175842. The cubic root of 985778260 is about 995.2367676408.

The spelling of 985778260 in words is "nine hundred eighty-five million, seven hundred seventy-eight thousand, two hundred sixty".