523023240 has 32 divisors (see below), whose sum is σ = 1569070080. Its totient is φ = 139472832.

The previous prime is 523023217. The next prime is 523023251. The reversal of 523023240 is 42320325.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2179144 + ... + 2179383.

It is an arithmetic number, because the mean of its divisors is an integer number (49033440).

Almost surely, 2^523023240 is an apocalyptic number.

It is an amenable number.

523023240 is an abundant number, since it is smaller than the sum of its proper divisors (1046046840).

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

523023240 is a wasteful number, since it uses less digits than its factorization.

523023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358541 (or 4358537 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 523023240 is about 22869.7013535376. The cubic root of 523023240 is about 805.7005539563.

Adding to 523023240 its reverse (42320325), we get a palindrome (565343565).

The spelling of 523023240 in words is "five hundred twenty-three million, twenty-three thousand, two hundred forty".