530401640 has 32 divisors (see below), whose sum is σ = 1194082560. Its totient is φ = 212040000.

The previous prime is 530401639. The next prime is 530401673. The reversal of 530401640 is 46104035.

It is a happy 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, 109265 + ... + 114015.

It is an arithmetic number, because the mean of its divisors is an integer number (37315080).

Almost surely, 2^530401640 is an apocalyptic number.

It is an amenable number.

530401640 is an abundant number, since it is smaller than the sum of its proper divisors (663680920).

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

530401640 is a wasteful number, since it uses less digits than its factorization.

530401640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553 (or 7549 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 530401640 is about 23030.4502778387. The cubic root of 530401640 is about 809.4716057971.

Adding to 530401640 its reverse (46104035), we get a palindrome (576505675).

The spelling of 530401640 in words is "five hundred thirty million, four hundred one thousand, six hundred forty".