978000530 has 64 divisors (see below), whose sum is σ = 1934241120. Its totient is φ = 353869824.

The previous prime is 978000523. The next prime is 978000559. The reversal of 978000530 is 35000879.

It is a Cunningham number, because it is equal to 31273²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 86918329 + 891082201 = 9323^2 + 29851^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1584782 + ... + 1585398.

Almost surely, 2^978000530 is an apocalyptic number.

978000530 is a deficient number, since it is larger than the sum of its proper divisors (956240590).

978000530 is a wasteful number, since it uses less digits than its factorization.

978000530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 978000530 is about 31273.0000159882. Note that the first 4 decimals coincide. The cubic root of 978000530 is about 992.6124011127.

The spelling of 978000530 in words is "nine hundred seventy-eight million, five hundred thirty", and thus it is an aban number.