671265028 has 36 divisors (see below), whose sum is σ = 1403469760. Its totient is φ = 275170896.

The previous prime is 671265019. The next prime is 671265029. The reversal of 671265028 is 820562176.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (671265029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7848 + ... + 37471.

Almost surely, 2^671265028 is an apocalyptic number.

It is an amenable number.

671265028 is an abundant number, since it is smaller than the sum of its proper divisors (732204732).

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

671265028 is a wasteful number, since it uses less digits than its factorization.

671265028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45376 (or 45351 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 671265028 is about 25908.7828351700. The cubic root of 671265028 is about 875.5843837177.

The spelling of 671265028 in words is "six hundred seventy-one million, two hundred sixty-five thousand, twenty-eight".