671542528 has 36 divisors (see below), whose sum is σ = 1344379680. Its totient is φ = 334790144.

The previous prime is 671542519. The next prime is 671542561. The reversal of 671542528 is 825245176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88251 + ... + 95557.

It is an arithmetic number, because the mean of its divisors is an integer number (37343880).

Almost surely, 2^671542528 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 671542528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672189840).

671542528 is an abundant number, since it is smaller than the sum of its proper divisors (672837152).

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

671542528 is an equidigital number, since it uses as much as digits as its factorization.

671542528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7682 (or 7668 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 671542528 is about 25914.1376086491. The cubic root of 671542528 is about 875.7050222048.

The spelling of 671542528 in words is "six hundred seventy-one million, five hundred forty-two thousand, five hundred twenty-eight".