523390032 has 160 divisors (see below), whose sum is σ = 1659893760. Its totient is φ = 156574080.

The previous prime is 523390031. The next prime is 523390069. The reversal of 523390032 is 230093325.

It is a super-2 number, since 2×523390032² = 547874251193922048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 523389978 and 523390005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523390031) 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 31 ways as a sum of consecutive naturals, for example, 393753 + ... + 395079.

It is an arithmetic number, because the mean of its divisors is an integer number (10374336).

Almost surely, 2^523390032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523390032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829946880).

523390032 is an abundant number, since it is smaller than the sum of its proper divisors (1136503728).

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

523390032 is a wasteful number, since it uses less digits than its factorization.

523390032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 523390032 is about 22877.7191170798. The cubic root of 523390032 is about 805.8888537225. Note that the first 4 decimals are identical.

The spelling of 523390032 in words is "five hundred twenty-three million, three hundred ninety thousand, thirty-two".