526378986 has 80 divisors (see below), whose sum is σ = 1353194304. Its totient is φ = 149812416.

The previous prime is 526378967. The next prime is 526379003. The reversal of 526378986 is 689873625.

It is a happy number.

526378986 is a `hidden beast` number, since 526 + 37 + 8 + 9 + 86 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 354201 + ... + 355683.

Almost surely, 2^526378986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 526378986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676597152).

526378986 is an abundant number, since it is smaller than the sum of its proper divisors (826815318).

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

526378986 is a wasteful number, since it uses less digits than its factorization.

526378986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1808 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 526378986 is about 22942.9506820723. The cubic root of 526378986 is about 807.4200215369.

The spelling of 526378986 in words is "five hundred twenty-six million, three hundred seventy-eight thousand, nine hundred eighty-six".