671578288 has 40 divisors (see below), whose sum is σ = 1404597600. Its totient is φ = 310109184.

The previous prime is 671578277. The next prime is 671578291. The reversal of 671578288 is 882875176.

It is a happy number.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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, 20793 + ... + 42136.

It is an arithmetic number, because the mean of its divisors is an integer number (35114940).

Almost surely, 2^671578288 is an apocalyptic number.

It is an amenable number.

671578288 is an abundant number, since it is smaller than the sum of its proper divisors (733019312).

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

671578288 is a wasteful number, since it uses less digits than its factorization.

671578288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62989 (or 62983 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 52.

The square root of 671578288 is about 25914.8275703312. The cubic root of 671578288 is about 875.7205658497.

The spelling of 671578288 in words is "six hundred seventy-one million, five hundred seventy-eight thousand, two hundred eighty-eight".