531248920 has 32 divisors (see below), whose sum is σ = 1196493120. Its totient is φ = 212289280.

The previous prime is 531248903. The next prime is 531248933. The reversal of 531248920 is 29842135.

It is a congruent number.

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, 38100 + ... + 50140.

It is an arithmetic number, because the mean of its divisors is an integer number (37390410).

Almost surely, 2^531248920 is an apocalyptic number.

It is an amenable number.

531248920 is an abundant number, since it is smaller than the sum of its proper divisors (665244200).

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

531248920 is a wasteful number, since it uses less digits than its factorization.

531248920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155 (or 13151 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 531248920 is about 23048.8377147309. The cubic root of 531248920 is about 809.9024014906.

The spelling of 531248920 in words is "five hundred thirty-one million, two hundred forty-eight thousand, nine hundred twenty".