981034578 has 40 divisors (see below), whose sum is σ = 2209363200. Its totient is φ = 325357560.

The previous prime is 981034577. The next prime is 981034597. The reversal of 981034578 is 875430189.

981034578 is a `hidden beast` number, since 98 + 103 + 457 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (981034573) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17023 + ... + 47453.

It is an arithmetic number, because the mean of its divisors is an integer number (55234080).

Almost surely, 2^981034578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981034578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104681600).

981034578 is an abundant number, since it is smaller than the sum of its proper divisors (1228328622).

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

981034578 is a wasteful number, since it uses less digits than its factorization.

981034578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30644 (or 30635 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 981034578 is about 31321.4715171558. The cubic root of 981034578 is about 993.6378009318.

The spelling of 981034578 in words is "nine hundred eighty-one million, thirty-four thousand, five hundred seventy-eight".