528627978 has 32 divisors (see below), whose sum is σ = 1180656000. Its totient is φ = 175320288.

The previous prime is 528627977. The next prime is 528628007. The reversal of 528627978 is 879726825.

It is a happy number.

528627978 is a `hidden beast` number, since 5 + 2 + 8 + 627 + 9 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (528627977) 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 15 ways as a sum of consecutive naturals, for example, 13851 + ... + 35342.

It is an arithmetic number, because the mean of its divisors is an integer number (36895500).

Almost surely, 2^528627978 is an apocalyptic number.

528627978 is an abundant number, since it is smaller than the sum of its proper divisors (652028022).

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

528627978 is a wasteful number, since it uses less digits than its factorization.

528627978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49403 (or 49397 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 528627978 is about 22991.9111428346. The cubic root of 528627978 is about 808.5683077069.

The spelling of 528627978 in words is "five hundred twenty-eight million, six hundred twenty-seven thousand, nine hundred seventy-eight".