671420528 has 40 divisors (see below), whose sum is σ = 1359154080. Its totient is φ = 320902400.

The previous prime is 671420513. The next prime is 671420543. The reversal of 671420528 is 825024176.

It is an interprime number because it is at equal distance from previous prime (671420513) and next prime (671420543).

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, 39701 + ... + 54027.

It is an arithmetic number, because the mean of its divisors is an integer number (33978852).

Almost surely, 2^671420528 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 671420528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679577040).

671420528 is an abundant number, since it is smaller than the sum of its proper divisors (687733552).

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

671420528 is a wasteful number, since it uses less digits than its factorization.

671420528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14465 (or 14459 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 671420528 is about 25911.7835742737. The cubic root of 671420528 is about 875.6519888383.

The spelling of 671420528 in words is "six hundred seventy-one million, four hundred twenty thousand, five hundred twenty-eight".