532721640 has 64 divisors (see below), whose sum is σ = 1743456960. Its totient is φ = 129144320.

The previous prime is 532721611. The next prime is 532721669. The reversal of 532721640 is 46127235.

It is an interprime number because it is at equal distance from previous prime (532721611) and next prime (532721669).

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

It is a junction number, because it is equal to n+sod(n) for n = 532721598 and 532721607.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 200469 + ... + 203108.

It is an arithmetic number, because the mean of its divisors is an integer number (27241515).

Almost surely, 2^532721640 is an apocalyptic number.

It is an amenable number.

532721640 is an abundant number, since it is smaller than the sum of its proper divisors (1210735320).

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

532721640 is a wasteful number, since it uses less digits than its factorization.

532721640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403602 (or 403598 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 532721640 is about 23080.7634189166. The cubic root of 532721640 is about 810.6501106035.

Adding to 532721640 its reverse (46127235), we get a palindrome (578848875).

The spelling of 532721640 in words is "five hundred thirty-two million, seven hundred twenty-one thousand, six hundred forty".