671972130 has 48 divisors (see below), whose sum is σ = 1748578104. Its totient is φ = 179043840.

The previous prime is 671972111. The next prime is 671972131. The reversal of 671972130 is 31279176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 290668401 + 381303729 = 17049^2 + 19527^2 .

It is not an unprimeable number, because it can be changed into a prime (671972131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145050 + ... + 149610.

Almost surely, 2^671972130 is an apocalyptic number.

671972130 is an abundant number, since it is smaller than the sum of its proper divisors (1076605974).

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

671972130 is a wasteful number, since it uses less digits than its factorization.

671972130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211 (or 6208 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 671972130 is about 25922.4252337624. The cubic root of 671972130 is about 875.8917189611.

The spelling of 671972130 in words is "six hundred seventy-one million, nine hundred seventy-two thousand, one hundred thirty".