978000558 has 16 divisors (see below), whose sum is σ = 1966809936. Its totient is φ = 324198720.

The previous prime is 978000523. The next prime is 978000559. The reversal of 978000558 is 855000879.

It is a super-3 number, since 3×978000558³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978000559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449191 + ... + 451362.

It is an arithmetic number, because the mean of its divisors is an integer number (122925621).

Almost surely, 2^978000558 is an apocalyptic number.

978000558 is an abundant number, since it is smaller than the sum of its proper divisors (988809378).

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

978000558 is a wasteful number, since it uses less digits than its factorization.

978000558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900739.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 978000558 is about 31273.0004636587. Note that the first 3 decimals coincide. The cubic root of 978000558 is about 992.6124105855.

The spelling of 978000558 in words is "nine hundred seventy-eight million, five hundred fifty-eight", and thus it is an aban number.