523622820 has 72 divisors (see below), whose sum is σ = 1705523904. Its totient is φ = 119684544.

The previous prime is 523622791. The next prime is 523622821. The reversal of 523622820 is 28226325.

523622820 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (523622821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86112 + ... + 91991.

It is an arithmetic number, because the mean of its divisors is an integer number (23687832).

Almost surely, 2^523622820 is an apocalyptic number.

It is an amenable number.

523622820 is an abundant number, since it is smaller than the sum of its proper divisors (1181901084).

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

523622820 is a wasteful number, since it uses less digits than its factorization.

523622820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178129 (or 178120 counting only the distinct ones).

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

The square root of 523622820 is about 22882.8062090295. The cubic root of 523622820 is about 806.0083143139.

The spelling of 523622820 in words is "five hundred twenty-three million, six hundred twenty-two thousand, eight hundred twenty".