523689426 has 36 divisors (see below), whose sum is σ = 1228663098. Its totient is φ = 161134272.

The previous prime is 523689401. The next prime is 523689427. The reversal of 523689426 is 624986325.

523689426 is a `hidden beast` number, since 523 + 6 + 89 + 42 + 6 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 278923401 + 244766025 = 16701^2 + 15645^2 .

It is a super-2 number, since 2×523689426² = 548501229808418952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523689427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 83035 + ... + 89118.

Almost surely, 2^523689426 is an apocalyptic number.

523689426 is an abundant number, since it is smaller than the sum of its proper divisors (704973672).

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

523689426 is a wasteful number, since it uses less digits than its factorization.

523689426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172187 (or 172171 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 523689426 is about 22884.2615349502. The cubic root of 523689426 is about 806.0424882215.

The spelling of 523689426 in words is "five hundred twenty-three million, six hundred eighty-nine thousand, four hundred twenty-six".