523820406 has 16 divisors (see below), whose sum is σ = 1061992944. Its totient is φ = 172214784.

The previous prime is 523820351. The next prime is 523820411. The reversal of 523820406 is 604028325.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 597531 + ... + 598406.

It is an arithmetic number, because the mean of its divisors is an integer number (66374559).

Almost surely, 2^523820406 is an apocalyptic number.

523820406 is an abundant number, since it is smaller than the sum of its proper divisors (538172538).

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

523820406 is a wasteful number, since it uses less digits than its factorization.

523820406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196015.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 523820406 is about 22887.1231481809. The cubic root of 523820406 is about 806.1096824014.

The spelling of 523820406 in words is "five hundred twenty-three million, eight hundred twenty thousand, four hundred six".